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Physiology Quiz -
Physiology of Hearing - Part 11
The auditory system is responsible for converting sound waves in the environment into electrical signals that the brain can receive and utilize as useful information about the sound characteristics of the external environment. Test your basic knowledge of auditory physiology by taking this simple quiz.
(1)   Within the inner ear cochlear duct, the ionic composition of perilymph is mostly similar to that of plasma and, indeed, perilymph is formed primarily from plasma.
(2)   Within the inner ear cochlear duct, endolymph is produced by __________.



(3)   Within the inner ear cochlear duct, the scala media (containing endolymph) is electrically __________ relative to the scala vestibuli and scala tympani (both containing perilymph).
(4)   Within the inner ear cochlear duct, the electrical potential difference between the scala media (containing endolymph) and the scala vestibuli (containing perilymph) is __________. Assume that the scala vestibuli is the reference.
(5)   Within the inner ear cochlear duct, the electrical potential difference between the scala media (containing endolymph) and the scala tympani (containing perilymph) is __________. Assume that the scala tympani is the reference.
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Posted: Wednesday, November 11, 2015