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Physiology Special Senses a12333ed

Depolarisation in hair cells of organ of coi occurs due to:

A
Movement of basilar membrane
B
Movement of taller stereocilia toward the smaller ones
C
Influx of Na+
D
None of the above
High-Yield Explanation
Depolarisation in hair cells of organ of coi occurs primarily due to movement of basilar membrane TIP LINK THEORY: When the shoer stereocilia are pushed toward the taller ones, the channel open time is increased. K+, the most abundant cation in endolymph, and Ca2+ enter the channel and induce depolarization. Mainly K+ influx in the hair cells causes depolarisation.

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