Question

Which one of the following statements about the cochlea would be the most correct? a) Hair...

Which one of the following statements about the cochlea would be the most correct?

a) Hair cells near the oval window depolarize in response to high sound frequencies

b) The perilymph contains high concentrations of K+ ions

c) Hair cells will excite the associated auditory nerve when they release K+ on to the nerve

Science   Anatomy-And-Physiology   
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Answer #1

ANSWER :

The perilymph present in surrounding of hair cells have high concentration of Na+ concentration then K+. When a stimulus (sound wave) reach to the hair cells, located in the Organ of corti (or cochlea) depolarize when an influx of potassium ions (K+) via transduction channels in them and lead to initiate the release of neurotransmitter to synapse from base of cells to sensory neurons of auditory nerve, and transmit further information in them. Hence option (c) is the correct answer choice.

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