Q7 An increase in K permeability in the stereocilia of cochl

Q7. An increase in K⁺ permeability in the stereocilia of cochlear hair cells would stimulate depolarization.
a. TRUE

b. FALSE

Q8. Activation of gustducin causes subsequent stimulation of which of the following effector proteins?

Adenylyl cyclase

Phospholipase C

Phosphodiesterase

Q9. Acceleration is chiefly sensed by the semicircular canals of the inner ear

a. TRUE

b. FALSE

Solution

Q7. True

The hair cell is depolarized by K +influx at the apex of the hair cell through transduction channels.

Q8. phosphodiesterase

-gustducin (-gus) is homologous to -transducin and activates phosphodiesterase

Q9. a. TRUE

The semicircular canals sense linear accelerations.