Which correctly describes a step in auditory signal transduction ?

Options

A. Displacement of the basilar membrane with respect to the tectorial membrane stimulates stereocilia on the hair cells.
B. Pressure waves on the oval window cause vibrations of the melleus, which are transferred via the stapes to the round window.
C. Movement of the stapes causes oscillations in the tympanic membrane, which is in contract with the endolymph
D. Oscillations of the stapes against the oval window set up pressure waves in the semicircular canals.

Answer

A

Explanation

Pressure waves traveling down the cochlea make the cochlear duct vibrate, moving the basilar membrane against the stationary tectorial membrane and bending the hair cells that bridge the gap between the two .