The Ear

Question 1

Pinna

Answer 1

captures sound waves (A)

Question 2

Auditory Canal + Wax functions

Answer 2

funnels sound into the middle ear, lined with ceruminous (wax) glands, wax fights bacteria and moistens ear (B)

Question 3

Ear Drum

Answer 3

vibrates with sound waves, similar to tympani (C)

Question 4

Middle Ear Ossicles

Answer 4

amplify sound waves to hear better (D)

Question 4

Semi-Circular Canals

Answer 4

detect balance while in motion, talks to the cerebellum (E)

Question 5

Vestibular Nerve

Answer 5

carry balance info to the cerebellum (F)

Question 6

Vestibule

Answer 6

balance at rest, talks to cerebellum (E’)

Question 7

Auditory (Cochlear) Nerve

Answer 7

carry hearing information to the temporal lobe (G)

Question 8

Cochlea & Origin of cochlea

Answer 8

bony, fluid-filled snail shell & mechanoreceptors of the ear (H)

Question 9

Eustachian Tube

Answer 9

pressure relief from the middle ear to the throat (airplane affects this) (I)

Question 10

Round Window

Answer 10

a flexible membrane that allows cochlear fluid to vibrate (as the oval goes IN, the round goes OUT) (J)

Question 11

Oval Window

Answer 11

flexible membrane where ossicles transfer vibrations into the cochlea (J’)

Question 12

Ossicles

Answer 12

connect the tympanic membrane to the inner ear allowing for the transmission of sound waves (it’s the thing that hits the ear drum)

Question 13

Oval Window

Answer 13

movement of fluid within the cochlea and activation of receptors for hearing (connects to snail shell)

Question 14

3 Ossicle names

Answer 14

hammer, stirrup, anvil