Practice Questions: Chapter 7

Answed: Correct: Score:%

1. The adequate stimulus for exciting the receptor cells of the cristae is:

A. motion of the cupula
B. movement of the stapes
C. movement of the tectorial membrane
D. fluid motion in the scala media
E. displacement of the otoconial membrane

2. The adequate stimulus for activating the saccule and utricle and, in turn, their receptors is:

A. low-frequency sounds
B. angular acceleration of the head
C. constant velocity of motion of the head
D. tilt of the head
E. changes in body posture

3. The differential sensitivity of inner ear receptors to sound vibration and linear and angular acceleration is due to:

A. different neurotransmitters used by receptor cells in different receptor organs
B. different innervation patterns among receptor organs
C. differences in the physical properties of endolymph in the different receptor organs
D. different functional properties of receptors cell in each of the receptor organs
E. differences in the mechanical properties of auxilliary structures and their coupling to sensory cell