Ear

Question 1

what cranial nerve controls balance and hearing

Answer 1

8

Question 2

what are the 3 parts of the ear

Answer 2

inner, middle and external

Question 3

What is the visible outer part of the ear called

Answer 3

pinna

Question 4

what is the function of the pinna

Answer 4

directs sound down external acoustic meatus

Question 5

What is the external acoustic meatus lined with

Answer 5

a mucous membrane that contains glands that produce earwax

Question 6

what is the function of earwax

Answer 6

to prevent foreign objects entering the ear

Question 7

Where does the external acoustic meatus direct sound to

Answer 7

to the tympanic membrane

Question 8

What part of the ear is the tragus

Answer 8

top part

Question 9

what is not found in the ear lobule

Answer 9

cartilage

Question 10

Name the 3 ossicles

Answer 10

mallows, incus and stapes

Question 11

what contains the 3 ossicles

Answer 11

tympanic cavity

Question 12

what joins the tympanic cavity the pharynx

Answer 12

pahryngotympanic tube

Question 13

What is the function of the tympanic membrane

Answer 13

vibrates in response to sound and transmits vibrations to malleous

Question 14

What membrane regulates ear drum pressure

Answer 14

pharyngotympanic membrane

Question 15

what does the oval window allow

Answer 15

stapes to transmit sounds from the middle to outer ear

Question 16

What do hair cells in the inner ear do

Answer 16

amplify vibrations

Question 17

What controls balance

Answer 17

the semi circular canal

Question 18

What membrane supports the cochlear duct

Answer 18

basilar membrane, which deforms in response to pressure waves

Question 19

name 2 structures in the cochlea that contain perilymph

Answer 19

scala tympani and scala vestibuli

Question 20

what is perilymph

Answer 20

fluid that acts to cushion endolymph