vestibulococh nerve 1 part 1

Question 2

Vestibular Division on CN 8

Answer 2

Responds to movement of the head and the position of the head

Question 3

Responds to sound

Answer 3

Cochlear Division of CN 8

Question 4

The inner ear structures are embedded within the

Answer 4

temporal bone

Question 5

bony labyrinth and membranous labyrinth

Answer 5

inner ear structures

Question 6

hair cells

Answer 6

membranous labyrinth

Question 7

correct The bone labyrinth follows most of the contours of the membranous labyrinth

Answer 7

 The membranous labyrinth follows most of the contours of the bony labyrinth

Question 8

Consists of interconnected bony cavities and filled with perilymph

Answer 8

Bony Labyrinth

Question 9

perilymph

Answer 9

high na

low in K

Question 10

membranous ducts within the bony labyrinth

Answer 10

Membranous Labyrinth

Question 11

endolymph

Answer 11

(low in Na+ , high in K+ )

Question 12

endolymph

Answer 12

Membranous Labyrinth

Question 13

eventually reabsorbed

Answer 13

endolymph

Question 14

made by specialized cells in several locations in the membranous labyrinth.

Answer 14

endolymph

Question 15

leaves through a duct, to reach a sac to get to venous systme

Answer 15

endolymph

Question 16

[vertigo, nausea, hearing loss, ringing in the ears

Answer 16

obstruction of endolymph flow

Question 17

rank from ant to post

 Vestibule:

Semicircular Canals: 3 on each side: )

 Ampullae

Answer 17

vestibule ampullla semicircular canal

Question 19

central enlarged region of bony labrynth

Answer 19

vestibule

Question 20

dilation at one end of the each semicircular canals

Answer 20

ampulla

Question 21

function in complimentary pairing

Answer 21

L post+ r ant

Question 22

left horizontal and r. horizontal

Answer 22

function in complimentary paring

Question 23

Saccule:

Answer 23

Oriented vertically

Question 24

located in the bony vestibule

Answer 24

utricule sacule

Question 25

Oriented horizontally (when upright)

Answer 25

Utricle:

Question 27

linear (horizontal) acceleration

Answer 27

Utricle

Question 28

Detect angular acceleration 

Activated with most head movements

Answer 28

Semicircular canals

Question 29

Detects linear (vertical) acceleration (example?)

Answer 29

saccule

Question 30

static head position

Answer 30

utricle saccule

Question 31

Adjacent to the tallest stereocilia

Answer 31

the single kinocilium (

Question 32

project into endolymphatic interior of the membranous labyrinth

Answer 32

stereocilia

Question 33

endolymph

Answer 33

surrrounds stereocilia

Question 34

High intracellular K+ opens

Answer 34

voltage gated Ca+2 channels

Neurotransmitter is released (glutamate)

Question 35

glutamate trigger and triggering CN 8 by

Answer 35

steeocilia

Question 36

moveing toward highest stereocilia

Answer 36

Opens the mechanically gated K+ ion channels •

K+ enters the cell •

Question 38

neutral position of stereocilia

Answer 38

gate partially open