Chapter 17 The Ear

Question 1

auditory canal

Answer 1

channel that leads from the pinna to the eardrum

Question 2

auditory meatus

Answer 2

auditory canal

Question 3

auditory nerve fibers

Answer 3

carry impulses from the inner ear to the brain (cerebral cortex); these fibers compose the vestibulochoclear nerve (cranial nerve VII)

Question 4

auditory tube

Answer 4

channel between the middle ear and the nasopharynx; eustachian tube

Question 5

auricle

Answer 5

the protruding part of the external ear or pinna

Question 6

cerumen

Answer 6

waxy substance secreted by the external ear; earwax

Question 7

cochlea

Answer 7

snail shell-shaped, spirally wound tube in the inner ear; contains hearing-sensitive receptor cells

Question 8

endolymph

Answer 8

fluid within the labyrinth of the inner ear

Question 9

eustachian tube

Answer 9

auditory tube

Question 10

incus

Answer 10

second ossicle (small bone) of the middle ear; incus means anvil

Question 11

labyrinth

Answer 11

maze-like series of canals of the innerear; includes cochlea, vestibule, and semicircular canals

Question 12

malleus

Answer 12

first ossicle of the middle ear; malleus means hammer

Question 13

organ of Corti

Answer 13

sensitive auditory receptor area found in the cochlea of the inner ear

Question 14

ossicle

Answer 14

small bone of the ear; includes malleus, incus, and stapes

Question 15

oval window

Answer 15

membrane between the middle ear and the inner ear

Question 16

perilymph

Answer 16

fluid contained in the labyrinth of the inner ear

Question 17

pinna

Answer 17

auricle; flap of the ear

Question 18

semicircular canals

Answer 18

passages in the inner ear associated with maintaining equilibrium

Question 19

stapes

Answer 19

third ossicle of the middle ear; stapes means stirrup

Question 20

tympanic membrane

Answer 20

membrane between the outer and the middle ear; also called the eardrum

Question 21

vestibule

Answer 21

central cavity of the labyrinth, connecting the semicircular canals and the cochlea; contains the saccule and utricle that help to maintain equilibrium