Quiz 9 - Ear

Question 1

three anatomical regions

Answer 1

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

Question 2

how do receptors for hearing and equilibrium work

Answer 2

respond to separate stimuli and are activated independently

Question 3

parts of external ear

Answer 3

auricle
external acoustic meatus
tympanic membrane

Question 4

auricle

Answer 4

flexible elastic cartilage; directs sound into meatus

Question 5

external acoustic meatus

Answer 5

facilitates direction of sound to eardrum

Question 6

tympanic membrane

Answer 6

“ear drum” - thin connective tissue membrane that vibrates in response to sound

• separates external ear from middle ear
• transfers sound energy to ossicles

Question 7

parts of middle ear

Answer 7

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

Question 8

auditory tube

Answer 8

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

Question 9

auditory ossicles

Answer 9

tiny bones that act as leavers to transfer sound vibrations

Question 10

malleus

Answer 10

(hammer) - attached to tympanic membrane

Question 11

incus

Answer 11

(anvil) - middle bone connecting malleus to stapes

Question 12

stapes

Answer 12

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