Chapter 17 - Key Vocabs 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 vestibulocochlear nerve (cranial nerve VIII)

Question 4

Auditory tube

Answer 4

Channel between the middle ear and the nasopharynx; Eustachian tube

Question 5

Auricle

Answer 5

Flap of the ear; 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. Anvil

Question 11

Labyrinth

Answer 11

Maze-like series of canals of the inner ear. Includes the cochlea, vestibule, and semicircular canals

Question 12

Malleus

Answer 12

First ossicle of the middle ear; 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; include 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

Passage in the inner ear associated with maintaining equilibrium

Question 19

Stapes

Answer 19

Third ossicle of the middle ear. Stirrup.

Question 20

Tympanic membrane

Answer 20

Membrane between the outer and the middle ear; eardrum

Question 21

Vestibule

Answer 21

Central cavity of the labyrinth, connecting the semicircular canals, and the cochlea. Contains saccule and utricle for equilibrium.

Question 22

What composes the “outer ear” portion?

Answer 22

Pinna —> External auditory canal —>tympanic membrane

P.E.T

Question 23

What composes of the “middle ear” portion?

Answer 23

Malleus —> Incus —>Stapes —> Oval Window

M.I.S.O

Question 24

What composes the “Inner Ear” portion?

Answer 24

Cochlea —> Organ of Corti —>Auditory Nerve Fibers

C.O.A