Lom Ch 17 Vocab (Ears)

Front 1

auditory canal

Back 1

channel that leads from the pinna to the eardrum

Front 2

auditory meatus

Back 2

auditory canal

Front 3

auditory nerve fibers

Back 3

carry impulses from the inner ear to the brain(cerebral cortex). These fibers compose the vestibulocochlear nerve (cranial nerve 8).

Front 4

auditory tube

Back 4

channel between the middle ear and the nasopharynx;eustachian tube

Front 5

auricle

Back 5

flap of the ear;the protruding part of the external ear,or pinna

Front 6

cerumen

Back 6

waxy substance secreted by the external ear;also called ear wax

Front 7

cochlea

Back 7

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

Front 8

endolymph

Back 8

fluid within the labyrinth of the inner ear

Front 9

eustachian tube

Back 9

auditory tube

Front 10

incus

Back 10

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

Front 11

labyrinth

Back 11

maze-like series of canals of the inner ear. This includes the cochlea,vestibule,and semicircular canals

Front 12

malleus

Back 12

first ossicle of the middle ear;malleus means hammer

Front 13

organ of Corti

Back 13

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

Front 14

ossicle

Back 14

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

Front 15

oval window

Back 15

membrane between the middle and the inner ears

Front 16

perilymph

Back 16

fluid contained in the labyrinth of the inner ear

Front 17

pinna

Back 17

auricle;flap of the ear

Front 18

semicircular canals

Back 18

passages in the inner ear associated with maintaining equilibruim

Front 19

stapes

Back 19

third ossicle of the middle ear

Front 20

tympanic membrane

Back 20

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

Front 21

vestibule

Back 21

central cavity of the labyrinth,connecting the semicircular canals and the cochlea. The vestibule contains two structures,the saccule and the utricle, that help maintain equilibrium

Front 22

acoustic neuroma

Back 22

benign tumor arising from the acoustic vestibulocochlear nerve (8th cranial nerve)in the brain

Front 23

cholesteatoma

Back 23

collection of skin cells and cholesterol in a sac within the middle ear

Front 24

deafness

Back 24

loss of the ability to hear

Front 25

Meniere disease

Back 25

disorder of the labyrinth of the inner ear marked by elevated endolymph pressure within the cochlea(cochlear hydrops)and semicircular canals(vestibular hydrops)

Front 26

otitis media

Back 26

inflammation of the middle ear

Front 27

otosclerosis

Back 27

hardening of the bony tissue of the labryrinth of the ear

Front 28

tinnitus

Back 28

sensation of noises (ringing,buzzing,whistling,
booming)in the ears

Front 29

vertigo

Back 29

sensation of irregular of whirling motion either of oneself or of external objects

Front 30

audiometry

Back 30

testing the sense of hearing

Front 31

ear thermometry

Back 31

measurement of the temperature of the tympanic membrane by detection of infrared radiation from the eardrum

Front 32

otoscopy

Back 32

visual examination of the ear with an otoscope

Front 33

tuning fork test

Back 33

test of and ear conduction using a vibration source(tuning fork)