Biology - Neural Control and Coordination Question with Solution | TestHub
During mechanism of hearing, generation of nerve impulses in afferent neurons occurs due to which of following events?
Options:
Answer:
Solution:
During the mechanism of hearing, sound waves enter the external ear and cause vibrations in the tympanic membrane. These vibrations are transmitted through the ear ossicles to the oval window, generating waves in the perilymph of the cochlea.
The waves in the lymph induce a ripple in the basilar membrane. The upward movement of the basilar membrane bends the hair cells, pressing them against the tectorial membrane.
This mechanical bending opens ion channels in the hair cells, leading to depolarization and the generation of action potentials (nerve impulses) in the associated afferent neurons.
Answer: Upward movement of basilar membrane causes the hair cells to press against tectorial membrane.
