The Ears Parts and Functions

Question 1

Pinna

Answer 1

capture sound waves and directs them into the ear

Question 2

Auditory Canal

Answer 2

amplifies and directs sound waves to the tympanic

Question 3

Tympanic Membrane

Answer 3

vibrates when hit by sound waves

Question 4

Ossicles

Answer 4

mallows, incus, stapes

transmits and amplifies vibrations from the tympanic membrane to the oval window

Question 5

Eustachian tube

Answer 5

connects the middle ear to the pharynx to control air pressure

Question 6

Round Window

Answer 6

relieves pressure in the inner ear from tapping the oval window

Question 7

Oval Window

Answer 7

picks up vibrations from the stapes and transmits vibrations to the fluid in the cochlea

Question 8

Cochlea

Answer 8

transforms fluid vibrations to nerve impulses

Question 9

Organ of Corti

Answer 9

contains hair cells that pick up vibrations between the tectorial and basilar membranes

Question 10

Basilar Membrane

Answer 10

picks up vibrations in the cochlear fluid causing the hair cells to vibrate

Question 11

Tectorial Membrane

Answer 11

stereocillia attached to the hair cells bend against the membrane

Question 12

Auditory Nerve

Answer 12

carries nerve impulses from the ear to the brain

Question 13

Semicircular Canals

Answer 13

fluid filled loops that contain mechanoreceptors to sense head and body rotation

Question 14

Ampulla

Answer 14

at the base of the canal and contains hair cells and stereocilia

Question 15

Vestibular Nerve

Answer 15

sends impulses from the ampulla to the brain