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Flashcards in Ear Terminology Deck (17):
1

vestibular system

organs dedication to balance

2

pinna/auricle

seashell-shaped cartilaginous portion of ear located outside head

3

helix

hard outer edge at the top of pinna

4

tragus

small promince of pinna attached to side of head and near ear canal

5

lobule

fatty tissue located at the bottom portion of external ear

6

tympanic membrane

external auditory canal, eardrum. Vibrates when sound waves reach it.

7

cerumen

fine hairs and wax-like secretions that protect ear canal from debris and airborne particles

8

ossicles

3 tiny ear bones: malleus, incus, stapes

9

malleus

tiny bone that passes vibrations from eardrum to anvil

10

incus

tiny bone that passes vibrations from hammer to stirrup

11

stapes

tiny U-shaped bone that passes vibrations from the stirrup to the cochlea. Smallest bone in the human body.

12

cochlea

snail-shaped fluid filled structure, line with cilia (tiny hairs) that move when vibrated and cause a nerve impulse to form

13

oval window

anatomic structure that separates middle ear from inner ear

14

organ of Corti

changes sound vibrations into electrical nerve signals in the cochlea

15

eustachian tube

tunnel linking the air behind the eardrum to the air in the throat and then to outside air, which allows atmospheric pressure changes to reach both sides of eardrum.

16

utricle/saccule/3 semicircular canals

organs of the vestibular system

17

3 semicircular canals

3 loops of fluid-filled tubes that are attached to the cochlea in the inner ear. They help maintain our sense of balance.