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Flashcards in nov17pt3 Deck (20):
1

hair cell is presynaptic to

auditory nerve (fires AP)

2

three vibrating bones called

malleus, incus, stapes

3

canals of cochlea

timpanic, vestibular, cochlear

4

fluids of ducts differ by

ionic composition

5

vibration of oval window leads to vibration in

vestibular duct

6

hair cells between these membranes

basilar and tectorial

7

solution in cochlear duct is called

endolymph

8

potential of endolymph

80-120mV

9

hair cells are bathed by

endolymph

10

endolymph unique due to high

K+ conc

11

perilymph found in

vestibular and timpanic duct

12

cilia stick out of

apical side

13

side that makes connections with auditory nerve

basolateral

14

only ____ hair cells make synaptic connections with auditory nerves

inner

15

purpose of outer hair cells

fine tune sensitivy of inner hair cells

16

cilia embedded in

tectorial

17

outer hair cells work by

contracting to make the basilar membrane stiffer

18

outer hair cells contract when

electrical signals leads to opening of voltage gated Ca channels, leading to activation of certain cytoskeletal proteins

19

hair cells IMS

negative 50mV

20

potassium flows into

hair cells