Which anatomical structure inside the human inner ear contains the hair cell sensory receptors responsible for hearing (audition)?
Answer and explanation
Correct answer: D. the organ of Corti located within the fluid-filled cochlea
- Step 1: Sound vibrations travel through ossicles to the oval window, generating pressure waves in cochlear perilymph and endolymph. Step 2. Pressure waves vibrate the basilar membrane, bending hair cells against the tectorial membrane in the organ of Corti to fire auditory nerve impulses. Answer: the organ of Corti located within the fluid-filled cochlea. Why not the others: Semicircular canals detect rotational balance; ossicles transmit middle ear vibrations; tympanic membrane is the eardrum.
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