Quiz 9 - Ear Flashcards Preview

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Flashcards in Quiz 9 - Ear Deck (12):
1

three anatomical regions

external - hearing
middle - hearing
inner ear - hearing and equilibrium

2

how do receptors for hearing and equilibrium work

respond to separate stimuli and are activated independently

3

parts of external ear

auricle
external acoustic meatus
tympanic membrane

4

auricle

flexible elastic cartilage; directs sound into meatus

5

external acoustic meatus

facilitates direction of sound to eardrum

6

tympanic membrane

"ear drum" - thin connective tissue membrane that vibrates in response to sound
- separates external ear from middle ear
- transfers sound energy to ossicles

7

parts of middle ear

auditory tube
auditory ossicles: malleus, incus, stapes
oval window
round window
tensor tympani and stapedius

8

auditory tube

connects middle ear to nasopharynx that permits equalization of pressures on either side of tympanic membrane

9

auditory ossicles

tiny bones that act as leavers to transfer sound vibrations

10

malleus

(hammer) - attached to tympanic membrane

11

incus

(anvil) - middle bone connecting malleus to stapes

12

stapes

(stirrup) - base fills oval window connecting to inner ear