auditory and vestibular physiology

Question 1

what is the tallest cilia known as in the hair cell and what are the rest Called

Answer 1

tallest - kinocilium

rest. - stereocilia

Question 2

what ion channel is at the top of hair cells

Answer 2

potassium - then release of calcium and glutamate

Question 3

do tip link channels open or close when harry cells tilt towards the kinocilium

Answer 3

tilt towards = open

Question 4

what are the 3 fluid filled cavities of the ear (Scala)

Answer 4

scala vestibuli, scala tympani and scale media

Question 5

which type of fluid is contained in each of the Scala cavities

Answer 5

scala media - endolymph

tympani and vestibuli - perilymph

Question 6

what membrane separates the Scala vestibuli and Scala media

Answer 6

reissners membrane

Question 7

what membrane separates the Scala media from the scala tympani

Answer 7

basilar membrane

Question 8

what membrane is the organ of court found on

Answer 8

basilar membrane

Question 9

what membrane do the hair cells invaginate

Answer 9

tectorial membrane

Question 10

what type of hair cell is responsible for afferent signal to auditory nerve

Answer 10

inner hair cell

Question 11

what is the name for the equivalent to organ of court found in semicircular canals and the equivalent to tectorial membrane

Answer 11

crista and cupula

Question 12

what are the two otolith organs

Answer 12

saccule and urticle

Question 13

which of the othoith organs is responsible for movement in the horizontal plane

Answer 13

Urticle

Question 14

what is the name for the crystal that cause friction against hair cells in the otolith organs

Answer 14

otoconia

Question 15

how does alcohol cause spinning sensation

Answer 15

alcohol less dense than water so when drinking enters the cupula via blood and cupola floats in endolymph meaning more hair cells bend if you are still