Anatomic Terms

Question 1

external ear

Answer 1

outer structures of the ear that collect sound

Question 2

auricle

pinna

Answer 2

projected part of the external ear

Question 3

external acoustic meatus

Answer 3

external passage for sounds collected from the auricle to the tympanic membrane.

Question 4

cerumen

Answer 4

a waxy substance secreted by glands located throughout the external canal

Question 5

middle ear

Answer 5

structures in the middle of the ear that vibrate sound from the tympanic membrane to the internal ear

Question 6

tympanic membrane

tympanum

Answer 6

drum like structure that receives sound collected in the external acoustic meatus and amplifies it through the middle ear

Question 7

malleus

Answer 7

first of the three auditory ossicles of the middle ear

hammer

Question 8

incus

Answer 8

middle of the 3 auditory ossicles

anvil

Question 9

stapes

Answer 9

last of the 3 auditory ossicles

stirrup

Question 10

eustachian tube

auditory tube

Answer 10

tube connecting the middle ear to the pharynx

Question 11

oval window

Answer 11

membrane that covers the opening between the middle ear and internal ear

Question 12

internal ear

labyrinth

Answer 12

intricate fluid filled intercommunicating bony and membranous passages that function in hearing by relaying sound waves to auditory nerve fibers on a path to the brain for interpretation; also sense body movements and position to maintain balance and equilibrium

Question 13

cochlea

Answer 13

coiled tubular structure of the internal ear that contains the spiral organ

Question 14

perilymph

Answer 14

fluid that fills the boy labyrinth of the internal ear

Question 15

endolymph

Answer 15

fluid within the membranous labyrinth of the internal ear

Question 16

spiral organ

organ of corti

Answer 16

structure located in the cochlea; contains receptors that receive vibrations and generate nerve impulses for hearing

Question 17

vestibule

Answer 17

middle part of the internal ear in front of the semicircular canals and behind the cochlea that contains the utricle and the saccule; functions to provide the body balance and equilibrium

Question 18

utricle

Answer 18

the larger of 2 sacs within the membranous labyrinth of the vestibule in the internal ear

Question 19

saccule

Answer 19

the smaller of 2 sacs within the membranous labyrinth of the vestibule in the internal ear

Question 20

semicircular canals

Answer 20

3 canals within the internal ear that contain specialized receptor cells that generate nerve impulses with body movement