Learn Sixty-two original destinations implement the finite six-module anatomy/physiology foundation and whole-course synthesis. Actual CC0 tissue micrographs, original mechanism investigations and retained source-aware assessments support bounded structure–function reasoning; independent learner and practical competence remain separately assessed.
This is the course outline. Open a unit to choose a lesson; every lesson opens on its own page. Explanations and experiments live inside those lesson pages.
Preparation: Cell biology, membranes and basic chemistry at General Biology I level; ratios, units and graph interpretation. No clinical training, specimen handling, programming or personal physiological measurement is required.
Course outcome: Identify tissues from actual supplied images; connect skin/bone/muscle, neural/endocrine, transport, metabolic/renal and immune/reproductive structures to bounded function; defend original integrated evidence with critique and unfamiliar transfer without clinical inference.
All lessons are directly accessible. Reused foundation explanations are identified where relevant; completing a different course does not award this course's evidence. The 62 registered lessons keep separate predictions, captures, practice responses and reflections.
Use subject-relative directions and actual licensed tissue images; distinguish structure from function, conserve particles/water and explain feedback and shared-system coupling.
Compare x=+1 with x=−1 at z=+2. Name the subject-relative relation and front-view screen relation separately. Then identify which coordinate is fixed by each section plane; distinguish a projection from a slice.
Inspect the real epithelial image and retain two visible features and one uncertain feature. Compare model angles 0° and 60° without changing thickness. Explain why nuclear rows and apparent width cannot alone distinguish simple from stratified tissue.
Compare θ=0°,45°,90° at f=0.5, then change f at fixed 45°. Retain the two projection steps and identify features in the actual tissue image that the single-direction model omits.
Compare the actual muscle and neuron images and retain two discriminating visible features plus one unresolved feature. Then compare areas 20/80 versus 50/50 in the synthetic packet, preserving tissue fractions and total area.
Hold epithelial resistance at 2 and vary the support resistance. Retain flux and both drops; identify a separate measurement that could distinguish a support-layer change from an altered reservoir gradient.
Compare initial shifts −0.5,0,+0.5 L at the same outside addition 300 mosmol. Retain initial concentrations, direction and final volumes. Identify which omitted pressure or permeability assumption would invalidate the calculation.
Compare g=0.5 and g=1.5 at d=1, then remove the disturbance. Record equilibrium, first step and whether the deviations alternate; do not equate a crossing of the target with a changed target.
Hold shared resistance at 2 and compare A resistance 2 versus 1. Check flow conservation and both pressure drops. State what independent measurement would distinguish a changed B resistance from a changed shared supply pressure.
Identify support/motion structures and explain their renewal, material geometry, joint kinematics, sarcomere activation and force boundaries without clinical or injury-threshold claims.
Compare external resistance 1 and 5 at subcutaneous resistance 1. Reconstruct all interface temperatures and identify the omitted vascular or evaporative mechanism that would require a new model.
Compare input 10 versus 15 at b=0.5. Retain the first three simultaneous updates and the complete entry/inventory/shedding balance. Then alter transit fraction without claiming a measured biological time scale.
Change inner radius at fixed material area and E, then change E at fixed geometry. Preserve area, I and EI separately. Explain why the model cannot establish an actual bone’s failure load.
Compare matched formation/resorption totals with a mismatch and record the minimum, final value and time order. Propose an observation that distinguishes low turnover from high balanced turnover at the same endpoint.
Compare radius versus humerus on the same side, then switch subject side. Separately compare sternum and vertebral column and state their anterior/posterior relationship rather than reading depth from screen left/right.
Change proximal orientation with bend held fixed, then change bend with proximal orientation fixed. Compare endpoint coordinates with radial distance and explain why joint rotation is not the same quantity as endpoint displacement.
Compare L=2.4 and 3.6 with thin length 1. Retain all band boundaries, then reduce thin length to 0.8 without claiming this is a physiological contraction mechanism. Explain why overlap and activation are separate evidence.
Compare speeds 20 and 40 m/s at path 0.4 m, then compare path lengths at fixed speed. Retain every stage and propose which intermediate observation could distinguish delayed propagation from delayed calcium activation.
Compare recruitment at fixed frequency and frequency at fixed recruitment. Retain maximum capacity and activation fraction separately, and reject the explanation that a larger whole-muscle force necessarily means taller action potentials.
Compare activation 0 and 0.5 at L=1.2, then compare lengths 0.8 and 1.2 at the same activation. Separate the symmetric active capacity from the asymmetric passive term.
Compare tendon angles 30° and 90° at fixed pennation, then alter pennation at fixed tendon angle. Keep moment arm, tendon force and fiber resultant separate. Identify which extra forces are needed before computing joint reaction.
Identify neural and endocrine pathways, distinguish electrical/chemical signal mechanisms, and discriminate competing transport, receptor and feedback explanations with bounded original evidence.
Toggle each edge while retaining the same input. Record which downstream paths remain and name at least one omitted descending or alternative pathway that limits a real anatomical interpretation.
Compare gB=0 with 0.5 at fixed A ratio 0.1, then change A ratio at fixed conductance. Retain both reversal potentials and both current directions; distinguish maintained gradients from equilibrium.
Compare λ=2 and λ=1 at node spacing 1. Retain first arriving amplitude, successful-node count and final passive versus regenerated outputs. Explain which parts of an actual action potential are absent.
Compare shunt 0 and2 at excitation 1, then set excitation 0 at both shunts. Retain voltage, total conductance and both currents; explain why the no-excitation resting voltage stays unchanged.
Compare center/surround 8/4 with 10/6 and8/8. Retain both absolute intensities and signed output, and describe a temporal-adaptation observation this static filter cannot predict.
Change afferent length at a fixed postganglionic length, then change the latter alone. Reconstruct every segment and explain why the fictional totals cannot be compared with a person’s response.
At total 6, compare carrier capacity 0,4 and8. Reconstruct the conservation equation and target occupancy, then state why a receptor-bound fraction does not establish the physiological effect.
Compare volumes1 and3 at secretion 4, then compare secretion 2 and6 at volume 2. Retain concentration, amount and time scales separately; do not infer secretion from one transient observation.
Compare target gains0.5 and1 at drive 4, then change drive at fixed gain. Retain both equilibrium equations and distinguish the step20 values from exact fixed points.
Hold the observed steady concentration fixed and compare all clearance candidates. Retain fitted secretion, half-life and one-time observation prediction; name a volume/binding/feedback change that would invalidate the simple discrimination.
Trace circulation and respiratory pathways, apply pressure-flow and gas-content conservation, and defend an integrated oxygen-delivery case without clinical or safety claims.
Compare ventricular pressures 0, 6 and 10 at arterial pressure 8. Trace the full circulation and record both valve gradients rather than relying on the words contraction or relaxation.
Change end-diastolic volume and ejection pressure separately. Reconstruct all four loop vertices, stroke volume, fraction and both work terms. State which physiological causes of a changed loop remain unidentified.
Compare all compliances at period 1, then change period at fixed compliance. Retain peak, trough, mean and integrated outflow, distinguishing the instantaneous pulse from the displayed runoff segment.
Change capillary pressure and lymph return independently. Close the two-compartment volume ledger, and identify which fixed pressure or protein assumption would fail if actual tissue volume changed substantially.
Compare0.2 L at 30/min with0.6 L at 10/min. Retain the common minute volume and both dead-space and alveolar terms; explain why actual gas exchange still needs perfusion and membrane evidence.
Compare area and thickness changes separately. Retain both resistances and drops, then name an independent ventilation or perfusion observation needed before interpreting whole-system transport.
Vary f at fixed bypass, then bypass at fixed f. Keep all three flow fractions, amount rates and the final denominator; explain why increasing one branch’s ventilation cannot be modeled simply by averaging pressures.
Hold pressure ratio fixed while changing capacity, then hold capacity fixed while changing pressure. Record the separate bound and dissolved terms and identify a missing affinity factor.
Compare denominator changes with numerator changes. Derive the two extrema explicitly, retain units and identify a storage or sampling observation that would invalidate the steady inference.
Compare demands20 and30 at flow 4, then flow 6 at demand 30. Retain delivery, permitted uptake, unmet demand and venous content, and state an upstream observation that distinguishes low flow from low content.
Trace nutrient transformations and renal transport, conserve energy/solute/water ledgers, and distinguish compensation of a sensed ratio from restoration of original amounts and mechanisms.
Change chain length at fixed total chain count. Count links, water and glucose independently, then close each atom ledger and explain why a bond count is not a digestion-time estimate.
Compare areas1,2,3 at concentration1 and then3. Retain supply, capacity, actual uptake and outgoing amount; identify which boundary limits each case.
Trace the two routes and vary only soluble retention. Retain the separate input, retained and outgoing ledgers and name one later process that the snapshot omits.
At input 300 compare all routing fractions, then use input 100 to inspect a deficit. Retain energy and mass units separately and list the omitted water, synthesis and adaptive terms.
Change filtration and reabsorption separately, preserving the secretion term. Trace where each transfer originates and ends, and distinguish amount rates from a missing urine-water rate.
Compare concentrations across the ideal threshold at fixed Tm, then vary Tm. Retain equality as a zero-spill boundary and distinguish a concentration threshold from an amount-rate maximum.
Compare allowed urine flows at each net tubular flux. Retain numerator and denominator units, and distinguish the inert marker assumption from the unknown solute’s behavior.
Reconstruct every signed local transfer and the net carrier/environment balance. Compare deep-turn concentration with final return concentration, then name the loop transport and water mechanisms intentionally missing from this exchanger.
Hold delivered water fixed and vary return fraction, then change delivered water at a fixed fraction. Close water and osmole balances and name a gradient observation required before attributing the change to ADH.
Compare acid-removal fractions at each base amount. Record both pools, ratio, pH and missing base; explain why a corrected ratio alone cannot identify the initiating mechanism.
Vary the water-per-solute ratio at a fixed added amount. Retain all three final variables and propose independent evidence distinguishing concentration compensation from full amount/volume restoration.
Trace immune and reproductive structures, distinguish conditional defense and developmental mechanisms, and defend integrated compensation with conserved amounts and explicit capacity limits.
Vary entry and downstream removal separately. Retain each stage’s denominator and explain a composition change that would make the fixed downstream fraction inappropriate.
Compare the input-on plateau or trend with the post-input decay at different removal coefficients. Retain the known cessation boundary and identify what would remain ambiguous without it.
Change precursor amount and elapsed steps separately, retaining the two activation schedules. Identify a specificity or resource observation required before connecting these clone units to protection.
Vary each clone amount separately and retain the full two-antigen response vector. Explain which additional signal helps distinguish abundance from specificity and where linearity could fail.
Compare the two ideal pathways at the same primary-cell count. Retain chromosomes per nucleus, DNA per nucleus, total DNA and the asymmetric functional assignment; explain the stipulated completion boundary.
Compare high levels and thresholds, retaining the complete five-point sequence and the trigger index. Explain which actual ovarian and uterine mechanisms this binary gate leaves out.
Vary rounds and allocation fraction independently. Close the cell-number and volume totals, and explain why the numerical categories do not identify actual human embryonic stages.
Change maternal and fetal flow separately. Close each amount-rate ledger and the conductance relation, and distinguish the hypothetical tracer from actual oxygen or hormone transport.
Compare volume 2/resistance 2 with volume 4/resistance 1, then hold resistance 2 while conceptually restoring volume 4. Retain pressure, flow and volume deficit as distinct quantities.
Compare capacities at fixed environment, then warmer environments at fixed capacity. Retain the sign of dry heat flow and the nonzero storage term, and identify omitted circulation and water-balance effects.
Connect six anatomical capability clusters through actual licensed tissue evidence, original compartment and mechanism analysis, retained first reasoning, human critique and unfamiliar transfer without clinical overclaiming.
Compare routing at fixed total flow, then total flow at fixed routing. Keep both local limits, flow-weighted return and the separate renal marker ledger. Find a case that meets all demands and explain which fixed assumptions prevent extrapolating it to a real person.
Retain the complete candidate-prediction table before selecting one. Hide and reveal the hormone and temporal records independently. Explain how uncertainty or an omitted mechanism could defeat a unique selection, then connect the logic to a named anatomical pathway without diagnosing a person.
Keep predictions before comparison, complete raw records and units, explain competing models and test a changed case. Supplied and simulated data are labeled in each lesson. A saved notebook is not proof of experimental technique or correct reasoning.
Evidence to retain: Retain subject-relative coordinate statements, two visible features and one unresolved feature for each actual licensed image, source/assistance exposure, and separate original geometry/area-weighting calculations.
Boundary: Actual published images are guided, source-labeled evidence, not collected specimens or blinded practical validation. Model measurements are not extracted from their pixels.
Evidence to retain: Reconstruct serial drops and common flux, and separately each compartment’s initial/final water volume and conserved particle amount; change one boundary and explain direction.
Boundary: Original passive and ideal osmotic teaching systems, not patient measurements, transport estimates or fluid recommendations.
Evidence to retain: Derive residual equilibrium and alternating response, then conserve network pressure/flow while changing one branch; specify an independent observation that could reject the explanation.
Boundary: No-delay controller and fixed-resistance network omit active physiological regulation; no personal experiments or clinical inference.
Evidence to retain: Retain skin-layer identities, thermal boundary drops, simultaneous renewal transfers, fixed-area geometric rigidity and lagged remodeling inventory; distinguish state from flux and geometry from material properties.
Boundary: Original models and schematics, not actual skin tests, bone density measurements, injury limits or treatments.
Evidence to retain: Identify subject-relative landmark regions, reconstruct link endpoints, and preserve thick/thin filament lengths while calculating changing band overlap. Compare a new orientation with a new internal geometry.
Boundary: Sparse original diagrams, not a complete atlas or independently assessed specimen practical; no physical range-of-motion challenge.
Evidence to retain: Separate stage delays, recruitment/frequency, active/passive force and tendon/fiber projections; close torque/local work and specify missing joint-reaction evidence.
Boundary: Fictional numerical responses, no electrical stimulation, clinical latency interpretation, exercise prescription or safe-loading assessment.
Evidence to retain: Identify CNS/PNS branch boundaries, reconstruct distinct ion currents at zero total current, and contrast passive attenuation with conditional regeneration; retain a branch cut versus a propagation failure prediction.
Boundary: Original circuit/ion models, not actual electrophysiology, stimulation or clinical localization; actual neuron image remains source-labeled M1 evidence.
Evidence to retain: Separate current from depolarization, contrast from absolute intensity, and shared afferent from branch-specific delay; identify an omitted dynamic or anatomical observation.
Boundary: Fictional response laws and paths; no sensory challenge, reflex measurement, drug administration or personal latency inference.
Evidence to retain: Conserve free/bound amounts, separate clearance from inverse-time rate, derive a feedback fixed point and compare endpoint-equivalent candidates using a supplied independent transient.
Boundary: Original dimensionless or arbitrary-unit models, not clinical assays, hormone interventions, diagnoses or treatment advice.
Evidence to retain: Trace serial circuits and valve gradients, reconstruct a pressure-volume loop, close a periodic reservoir volume balance and separate barrier flow from lymph return and tissue inventory.
Boundary: Original topology and prescribed models, not actual pressure traces, clinical measurements, edema diagnoses or safe-load estimates.
Evidence to retain: Separate total and fresh alveolar ventilation, close serial pressure drops and perfusion-weighted content mixing with explicit bypass fraction and complete denominators.
Boundary: Fictional volumes/resistances/contents; no personal respiratory challenge, measured diffusion capacity or gas-treatment recommendation.
Evidence to retain: Distinguish saturation/capacity/content, derive deterministic inverse-flow bounds and reject a demand exceeding a supplied extraction boundary without inventing a valid steady state.
Boundary: No real blood samples, individual cardiac-output inference, clinical extraction threshold or activity prescription.
Evidence to retain: Trace digestive organs and separate hydrolysis atoms, finite absorptive supply, portal/lymph material routes and energy versus stored-mass composition.
Boundary: Original generic chains, transport coefficients and storage units; no actual meal assay, feeding recommendation or body-weight prediction.
Evidence to retain: Identify glomerular/tubular/vascular routes, conserve filtered/returned/secreted amounts, retain threshold equality, distinguish clearance from urine water and account for signed exchanger transfers.
Boundary: Virtual generic solute and maintained gradient; no personal urine collection, diagnostic threshold or claim that an exchanger generates the renal gradient.
Evidence to retain: Close water/osmole ledgers, compare buffer endpoint ratios with missing amounts, and demonstrate concentration restoration without complete amount/volume restoration.
Boundary: Supplied final pools and arbitrary units; no real physiological challenge, clinical pH interpretation or fluid prescription.
Evidence to retain: Keep stage denominators, input/removal timing, precursor/delay contrasts and clone-specific signal shares. Predict before changing one boundary and identify an alternative mechanism.
Boundary: Inert tokens and original numerical responses, not actual agents, cultures, diagnostic assays or protective efficacy.
Evidence to retain: Annotate named pathways, retain nuclear versus functional products, distinguish level/duration feedback, conserve cellular volume and close separate maternal/fetal tracer streams.
Boundary: Original virtual records, not reproductive specimens, fertility timing, embryo culture or fetal exposure estimates.
Evidence to retain: Compare sensed pressure with retained volume and required evaporation with available capacity. Preserve failed balance states, inventories and the limits of fixed coefficients.
Boundary: No actual challenge, exercise, heat exposure, medical assessment or safe physiological threshold.
Evidence to retain: Retain local uptake limits, complete flow-weighted return, separate marker currency and all compatible endocrine candidates. Add the actual licensed tissue-image audit and a six-module action table with new first responses and source identity.
Boundary: Actual source-labeled tissue images are distinct from invented physiology. No individual diagnosis, participant challenge, clinical procedure or fabricated independent practical competence.
Open the retained response and project workspaces. Practice, saved work and independently reviewed proficiency remain separate.
These 33 course-specific public tasks are practice, not a secure examination. Each retains up to three immutable written responses, known feedback exposure before each response, and human rubric critiques. Drafts remain editable. No text-length check or self-reported review certifies correctness, independence, laboratory skill or mastery.
Use total flow 8, renal fraction 0.6, content 10, extraction ceiling 0.5, renal demand 8 and other demand 32. Calculate local flows/capacities/uptakes, unmet demand and flow-weighted venous content. Marker plasma concentration 2, filtration 0.1 of renal flow, return 0.5 and no secretion define a separate renal ledger. Compare routing 0.2 at unchanged total flow.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
For candidates(P,k,g)=(2,1,1),(4,1,0.5),(4,2,1), steady H=P/k and response R=gH. Given R2 and H2, list survivors. Then add virtual remaining fraction exp(−2) one time unit after production ceases. Explain which assumptions make selection possible and why it is not a diagnosis.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Independently inspect two of the four supplied CC0 micrographs. Retain exact image identity, source/creator/reuse basis, visible positive features and one plausible alternative. Connect one feature to a bounded function, identify what magnification/preparation/sectioning can hide, and distinguish the actual image from an original model diagram. Declare prior labels and feedback exposure.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Before feedback, construct a six-row evidence table linking actual tissue identification; skin/bone/muscle mechanics; neural/endocrine pathway perturbation; circulation/respiration transport; digestive/renal/fluid conservation; and immune/reproductive/integrated response. For every row include one original calculation or annotated anatomical argument, a changed-case response, source, assumption and observation that could reject the explanation. Link first reports rather than copying public answers.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Begin with 10000 inert tokens, entry fraction 0.3 and conditional removal 0.5. Separately compare naive precursor 1 with an eightfold memory starting pool after 2 response steps: naive waits 2 steps, memory doubles immediately. Calculate stage inventories and endpoint clones; explain why neither remaining tokens nor clone ratio measures actual infection or protection.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Use clone amounts A=1 and B=3 with responses A:[X4,Y1], B:[X1,Y3]. Calculate total signals and component shares. Separately a population starts 4 with recruitment 2 and removal coefficient 0.5 until time 3, then recruitment stops. Derive the post-stop half-life and population at time 6 without treating either packet as a diagnostic assay.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
For four replicated primary cells of an original 2n=6 species completing the sperm pathway, calculate final nuclear products, chromosomes per nucleus and total DNA in C. In a separate no-growth cleavage packet use four rounds, total cellular volume64 and lineage fraction0.5. Finally use maternal/fetal tracer flows1/1 with inlet concentrations10/0 and unit outlet-difference conductance. Close all three ledgers without combining their unrelated biological units.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
For signal sequence1,2,6,6,1 and threshold5, trigger only after two consecutive qualifying observations. Independently compare pressure P=2VR at V2/R2 with referenceV4/R1. In the thermal packet T37, environment20, metabolism60, dryloss2(T−environment), capacity40, find required/actual evaporation and initial stored heat. Explain three different meanings of an apparently successful response.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Before feedback, select an unfamiliar virtual immune, reproductive or integrated regulation record. Name structures, inputs, conserved amounts and sensed variables. Propose two mechanisms compatible with an endpoint and a changed observation that discriminates them. State source identity, fictional coefficients, no-personal-testing boundary and what remains unverified.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Three two-residue glucose chains undergo complete hydrolysis: count water, released glucose and product C/H/O. Separately surface factor3 and concentration1 with supply2C and capacity4AC/(2+C) give what uptake and outgoing amount? Name digestive organs/secretions and explain why enzyme identity, finite supply and uptake rate are different evidence.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Soluble portal input60 with immediate liver retention0.75 and independent lymph lipid packet20: find retained/systemic amounts without converting them into calories. Separately energy input300 versus expenditure150 is routed entirely to the4-unit/mass store or entirely to the9-unit/mass store: compare masses and conserved energy. Why is this not a body-weight forecast?
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Filtration3 at plasma concentration4, reabsorption fraction0.75 and secretion2: find excretion. In a separate generic-solute packet filtration2,C3,Tm6, what is spill? In the clearance packet plasma2,filtration3,net tubular flux−3 and urine flow0.5: find excretion, urine concentration and clearance. Explain why final concentration alone does not identify filtration.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Carrier startsC2 and follows maintained4,8,4,2 with fractional approach0.5 and flow1: reconstruct concentrations and signed transfers. Separately delivered water6,return fraction0.25 and osmole output6 give what urine water/concentration? Explain multiplier versus exchanger and ADH permeability versus a gradient.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
The generic buffer reference is base8/acid2,pKa6. Endpoint base4/acid1 has what pH and missing pools? A separate solute8/water4 compartment adds solute4 and water2: what concentration and volume remain? Before feedback, retain an original plan distinguishing normalized concentration/pH from restored amounts, with competing endocrine/renal mechanisms and an independent observation.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Trace systemic veins through the right heart, lungs and left heart back to systemic arteries. With atrial pressure2, ventricular6 and arterial8, identify both ideal valve states. For a separate loop EDV80/ESV40 mL, filling1/ejection6 kPa, calculate stroke, fraction and net work. For reservoir C1,R2,pulse6,T2, find pressure jump, mean flow/pressure and integrated period outflow.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
In the fluid packet Pc16,interstitial2,colloid6,K0.5,lymph0 and initial tissue20: find outward flow, tissue after2 and opposite vascular change. Separately gas thickness3/area2 with total partial-pressure difference12 gives what serial resistances, flux and drops? State why water inventory and gas diffusion cannot be substituted for one another.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Compare tidal/frequency pairs0.2 L×30/min and0.6 L×10/min with fixed dead space0.15 L. Then use total flow4, bypass0.5 at content6, and f0.25 of nonbypass flow through content18 versus the rest at10. Find ventilation partitions and all branch amount rates/mixed content. Why does equal minute ventilation not determine the mixed content?
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Use p1/capacity20 with S=p²/(1+p²), dissolved0.2p. Separately arterial content10, uptake6 and venous8 with uptake±1 and venous±0.5: find central flow/bounds. Finally at flow4,content10,maximum extraction0.6 and demand30, find delivery, maximum uptake, unmet demand and boundary venous content. What extra measurements distinguish poor ventilation, low capacity and low flow?
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Before feedback, choose a supplied oxygen-delivery change. Trace its anatomical route and propose at least two mechanisms at different stages, such as ventilation partition, regional mixing, binding capacity or flow. Predict a discriminating independent observation, close one amount/volume/work ledger, and identify a failed feasibility assumption. Retain source, assistance and prior answer exposure.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
The R→S→M and S→B circuit receives input 1 but S→M is absent. Identify spinal, motor and ascending outputs and CNS/PNS boundaries. Separately EA=−60, EB=60 and both conductances are 1: derive steady voltage and both outward currents. Why does zero net current not mean no ion movement?
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Initial amplitude 10, λ1 and node spacing1, threshold4: find first-node arrival and fourth-node output; compare passive amplitude at distance4. Separately leak1, excitatory conductance1 and shunt2 with reversals −60/0/−60: find voltage and excitatory inward current, comparing shunt0. Explain why a larger inward current can coexist with smaller depolarization.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Compare center/surround 8/4 with10/6 under R=C−S and baseline20. Then use afferent0.2 m at40 m/s, somatic additional12 ms, autonomic additional13 ms plus postganglionic0.1 m at2 m/s. Find both total delays and their difference. Which change preserves contrast, and which shared path change preserves the delay difference?
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Total hormone4 with carrier capacity0: find free concentration and receptor occupancy using Kd1. Separately secretion6, clearance2 and volume3 from C0=0: find steady concentration, steady amount, time constant and initial slope. Compare a virtual steady C3 at volume2 with candidate clearance1 versus3; fit secretion and predict post-input concentration at time1.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
For Pnext=.8P+.2a/(1+H), Hnext=.8H+.2bP, use drive4 and target gain0.5. Derive the positive fixed point. Before feedback, retain an original plan distinguishing altered target sensitivity from altered upstream drive or clearance, using at least one independent supplied observation. Identify neural/endocrine structures, controlled assumptions, competing predictions and prior assistance.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Thermal reservoirs 30/10, external resistance4, subcutaneous1, dermal2 and epidermal1: find flow and surface temperature. Separately three renewal stages start20 each, input5 and transfer0.5: find first two state vectors and steady per-stage inventory. Explain why a stable surface observation does not identify basal activity.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
An annulus has inner radius2 and fixed material areaπ with E2: find outer radius, I, EI and rigidity ratio to a same-area solid at E2. Separately a 100-unit remodeling packet resorbs3 per step for five steps then forms6 per step for five: find minimum and final inventory. Why is neither result a fracture prediction?
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Identify a subject-left lateral forearm bone and its front-view screen side. For links3/2 with α0° and additional bend120°, calculate endpoint and distance. Separately sarcomere L3.2, thin0.8 and thick1.6: calculate A, total I, H and overlap. Explain why the sparse diagrams do not certify practical identification.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Axon path 0.6 m, speed 60 m/s plus delays1,3,6 ms: total delay? Four units with maxima1,2,3,4 at40 Hz and factor f/(f+20): force? At L1.4,u0.25 use the supplied active/passive curves. For torque12, radius0.04, tendon90° and pennation60°, find tendon/fiber forces. State why no single result identifies clinical function or a safe load.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Before feedback, choose a supplied integumentary or musculoskeletal change. Name the structures and subject-relative orientation, identify at least two competing material/activation/boundary mechanisms, predict a discriminating observation and specify conserved quantities. State which evidence is a labeled schematic or invented packet and what unfamiliar image/model task a reviewer should provide. Retain assistance and prior exposure.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Use the four downloaded CC0 tissue images and their provenance manifest. Before opening source interpretations, record two visible features, a tentative major tissue class and one unresolved feature per image; retain any label/alt-text exposure honestly. Explain why striations alone do not separate skeletal and cardiac muscle, why nuclear rows do not alone count epithelial layers, and why one neural process cannot always be assigned from a single field. Give source identity, reuse basis and a proposed genuinely unfamiliar reviewer-assigned image task.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
A landmark has patient-left x−1 and superior z2. Give front-view screen horizontal coordinate and a plane fixing z. A 30 μm slab is crossed at 60° from its normal. Separately fields of areas 30/70 have target fractions 0.8/0.2. Calculate path length, total area fraction and equal-field mean, stating why neither observed width nor field fraction establishes whole-organ change.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Passive layers R1=1,R2=4 share total concentration difference 10. Find flux and drops. Separately the fictional 5 L compartment system receives 150 mosmol outside with no initial shift: outside particles 750, inside 900. Find final concentration, final volumes and water shift. Explain why these calculations do not estimate absorption or prescribe fluids.
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
A controller starts x4 with gain1.5 and disturbance1: find equilibrium and next two states. Separately supply difference12, shared resistance2 and parallel RA1/RB4: find branch pressure, total flow and both branch flows. What independent observations distinguish target shift from disturbance, or altered branch resistance from shared supply change?
Include calculations with units, source or dataset provenance, assumptions, competing explanations and limitations as relevant. The draft is saved but is not a locked response until submitted.
0/3 responses retained. No recorded feedback exposure for this task version. Earlier versions may already be familiar. Public inspectability still prevents certification of unfamiliarity.
Reviewer identity and role are declarations, not authenticated credentials. Unsaved review fields below are lost on navigation. Review every criterion with an exact quotation, calculation or evidence citation and a next step.
Build an original six-module anatomical portfolio using the four actual licensed tissue micrographs and distinct virtual mechanism records. Retain complete first reasoning and source identities; do not relabel model outputs as participant observations, guided image recognition as blinded performance or a course checklist as clinical competence.
Before public feedback, identify actual image sources, fictional mechanism packets, all six capability rows, competing explanations and the evidence needed to discriminate them. Preserve assistance and prior exposure.
Evidence to retain: First plan with source/version/reuse basis, original predictions and explicit no-participant-testing boundary.
Audit at least two actual supplied micrographs with visible features and alternatives, then connect skin/bone/muscle organization to a retained lever, contraction or structural calculation and changed case.
Evidence to retain: Exact image identity, observations, anatomical annotations, mechanical units and no diagnostic/injury claim.
Trace a named neural/endocrine pathway and perturbation, defend response timing and receptor alternatives, then close a circulation/respiration flow or diffusion budget and integrated regional delivery case.
Evidence to retain: Named pathway, compatible mechanisms, units, capacity limits and flow-weighted transport calculation.
Retain a digestive/energy ledger and renal/fluid amount balance distinguishing compensation from restoration. Add immune and reproductive mechanism explanations and a changed integrated response; never combine unlike material currencies.
Evidence to retain: Conserved amounts, conditional denominators, named structures, developmental/immune limits and nonclinical conclusions.
Submit all six rows, actual image audit, cumulative cases, uncertainty and rejected alternatives. Obtain criterion-linked human review; preserve the original report even when a correction is required.
Evidence to retain: Immutable first report, source/action crosswalk, reviewer rationale and practical/independence limitations.
Retain a justified revision, then receive a genuinely new reviewer-assigned anatomical image or mechanism packet before writing a fresh response. Declare assistance/exposure and provide supervised practical evidence only if separately claimed.
Evidence to retain: Original and revised reports, critique, unfamiliar assignment and first response; unmet independent practical gates remain visible.
Retain raw-data identifiers, provenance, units, prior predictions, methods, calculations, competing explanations and safety boundaries. State explicitly when data are simulated, supplied or genuinely observed. This saved text cannot verify a real experiment; do not invent measurements or completed supervised work. Maximum 12,000 characters; retain larger evidence files separately and cite them.
A nonempty report is only a saved submission. First and revised reports remain separate and cannot be overwritten. A critique of the first report is required before retaining one revision.
A reviewer supplies a new tissue field, changes a force/flow boundary, alters receptor versus clearance evidence or removes an assumed feedback relation. Explain what survives, what changes and what remains unresolved without individual clinical inference.
A human must supply the actual new task, evidence and conditions before the learner responds. The transfer-direction text is not itself an unseen assessment. Use the retained assignment form after the first project; exposed public task identifier: expanded-public:college-anatomy.
Science backups preserve each course's separate responses, exposure, rubric reviews and project history. Older backups do not reset attempts or erase known exposure. Divergent same-version immutable responses and incompatible same-version project histories are rejected rather than silently replaced; preserve both files for review.
Original LearnAI explanations and tasks use the references for scientific scope. Any attributed dataset or image has its own declared provenance. Laboratory or field activity requires an appropriate educator-approved protocol; no hazardous real-world operation is required by the guided path.
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Matching imported notebook drafts replace their current drafts. Omitted lessons and known first attempts remain. Export your current work first if you want to retain both drafts.
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