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PHYS 261 (Human Physiology) Week 3 Lab Slide Notes, Exams of Physiology

Princeton UniversityPhysiology

PHYS 261 (Human Physiology) Week 3 Lab Slide Notes

Typology: Exams

2025/2026

Available from 05/19/2026

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PHYS ||261 ||(Human ||Physiology)
||Week ||3 ||Lab ||Slide ||Notes ||
Exteroceptors ||- ||CORRECT ||ANSWER(S)✔✔Sensitive ||to ||stimuli ||
in ||external ||environment.
Examples ||of ||Exteroceptors ||- ||CORRECT ||ANSWER(S)✔✔Include:
o ||Tactile ||Corpuscles
o ||Lamellar ||Corpuscles
o ||Bulbous ||Corpuscles
Pain ||Receptors ||- ||CORRECT ||ANSWER(S)✔✔Free ||nerve ||endings ||
that ||detect ||pain ||and ||temperature.
Interoreceptors ||- ||CORRECT ||ANSWER(S)✔✔A.K.A. ||Visceral ||
receptors.
Interoreceptors ||- ||CORRECT ||ANSWER(S)✔✔Respond ||to ||stimuli ||
within ||the ||body.
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PHYS || 261 ||(Human ||Physiology)

||Week || 3 ||Lab ||Slide ||Notes ||

Exteroceptors ||- ||CORRECT ||ANSWER(S)✔✔Sensitive ||to ||stimuli || in ||external ||environment. Examples ||of ||Exteroceptors ||- ||CORRECT ||ANSWER(S)✔✔Include: o ||Tactile ||Corpuscles o ||Lamellar ||Corpuscles o ||Bulbous ||Corpuscles Pain ||Receptors ||- ||CORRECT ||ANSWER(S)✔✔Free ||nerve ||endings || that ||detect ||pain ||and ||temperature. Interoreceptors ||- ||CORRECT ||ANSWER(S)✔✔A.K.A. ||Visceral || receptors. Interoreceptors ||- ||CORRECT ||ANSWER(S)✔✔Respond ||to ||stimuli || within ||the ||body.

Proprioceptors ||- ||CORRECT ||ANSWER(S)✔✔Respond ||to ||internal || stimuli ||but ||restricted ||to ||skeletal ||muscle, ||tendons, ||joints, ||ligaments, ||etc. Refraction ||- ||CORRECT ||ANSWER(S)✔✔"Light ||bending" Accommodation ||- ||CORRECT ||ANSWER(S)✔✔Ability ||of ||the ||eye || to ||focus ||on ||objects ||that ||are ||close ||and ||far ||away. Convergence ||- ||CORRECT ||ANSWER(S)✔✔Medial ||movement ||of || eyes ||when ||focusing ||on ||close ||objects. Conduction ||Deafness ||- ||CORRECT ||ANSWER(S)✔✔Occurs ||when || something ||prevents ||sound ||waves ||from ||reaching ||the ||fluids ||of || internal ||ear. Conduction ||Deafness ||- ||CORRECT ||ANSWER(S)✔✔Caused ||by || compacted ||earwax, ||perforated ||ear ||drum, ||fusion ||of ||ossicles, ||etc. Sensorineural ||Deafness ||- ||CORRECT ||ANSWER(S)✔✔Occurs || when ||damage ||to ||the ||inner ||ear ||or ||nerve ||has ||occurred. Precentral ||Gyrus ||- ||CORRECT ||ANSWER(S)✔✔Primary ||motor || cortex.

Conduction ||Deafness ||- ||CORRECT ||ANSWER(S)✔✔During ||a || Weber ||tuning ||fork ||test, ||this ||deafness ||is ||present ||if ||the ||sound ||will ||be || heard ||more ||strongly ||in ||the ||ear ||in ||which ||there ||is ||a ||hearing ||loss ||due || to ||sound ||conduction ||by ||the ||bone ||of ||the ||skull. Sensorineural ||Deafness ||- ||CORRECT ||ANSWER(S)✔✔During ||a || Weber ||tuning ||fork ||test, ||this ||deafness ||is ||present ||if ||the ||tone ||is ||heard || in ||the ||unaffected ||ear ||but ||not ||in ||the ||ear ||with ||this ||deafness. Homunculus ||- ||CORRECT ||ANSWER(S)✔✔A ||visual || representation ||that ||represents ||how ||the ||brain ||senses ||and ||controls || different ||body ||parts ||where ||the ||lips ||are ||drawn ||larger ||for ||more || sensitivity ||and ||the ||torso ||is ||drawn ||smaller ||for ||lesser ||sensitivity.