Parts Of The Ear

Question 1

Ear drum

Answer 1

Separates the outer and middle ear. This thin flap of skin stretches tight across the inside of the ear like the skin on a drum. Sounds reaching the eardrum makes it vibrate.

Question 2

Pinna

Answer 2

This is the outer ear. It funnels sound into the ear canal

Question 3

Ossicles

Answer 3

Vibrations of the ear pass onto the ossicles, three tiny bones which are;
-hammer, anvil and stirrup
These bones magnify the vibrations.

Question 4

Oral window

Answer 4

Separates middle and inner ear. Vibrations from the stirrup are transmitted to this thin layer of tissue and continue through to the cochlea

Question 5

Semicircular canals

Answer 5

Give us our Sense of balance. filled with fluid. Don’t play a role in our hearing but may be affected if we have an infection or ear problem.

Question 6

Auditory nerves

Answer 6

Electrical impulses along this nerve to the brain which interprets them as sound

Question 7

Coachlea

Answer 7

This spiral shaped tube is filled with fluid. Vibrations cause this fluid to move and are detected by millions of tiny hairs inning the surface of the cochlea. Receptors attached to these hairs convert their movements into electrical impulses

Question 8

Eustachian tube

Answer 8

Joins middle ear to nose and throat. Air moves into or out of the middle ear through this tube to balance the air pressure on the other side of the eardrum.