In the ear, the maculae of the utricle and saccule are specialized to respond to which sensory stimulus?
a. Angular acceleration
b. Gravity
c. Increases in Na+ ions within endolymph
d. Sound frequency
e. Sound intensity
ANS: B
In response to the field of gravity, in combination with changes in the orientation of the head, the otoconia overlying a macula distort the shapes of the microvilli of hair cells and affect their func-tion.
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Fill in the blank(s) with the appropriate word(s).
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