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Physiology Quiz -
Physiology of Hearing - Part 13
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)   Loud sounds cause a reflex contraction of the skeletal muscles within the middle ear (tensor tympani and stapedius). Contraction of tensor tympani and stapedius leads to a reduction in sound transmission from the eardrum to the oval window of the inner ear. This sound-induced contraction of the tensor tympani and stapedius is referred to as the __________ reflex.



(2)   Sodium (Na+) is the most abundant cation in the following inner ear cochlear fluid:
(3)   Potassium (K+) is the most abundant cation in the following inner ear cochlear fluid:
(4)   Sodium (Na+) is the most abundant cation in the following inner ear cochlear fluid compartment:
(5)   Potassium (K+) is the most abundant cation in the following inner ear cochlear fluid compartment:
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Posted: Friday, November 13, 2015