Structure Of The Ear

Question 1

Ear Canal

Answer 1

Transmits the sound waves to the ear drum.

Question 2

Eardrum

Answer 2

Converts the transmitted sound waves into mechanical vibrations.

Question 3

Ossicles

Answer 3

Three small bones; anvil, hammer and the stirrup. These bones amplify the vibrations.

Question 4

Cochlea

Answer 4

Filled with fluid, the vibrations cause the fluid to move and is detected by a million tiny hairs lining the surface of the Cochlea. Receptors attached to these hairs convert the mechanical vibrations into electrical impulses.

Question 5

Auditory nerves

Answer 5

The electrical impulses created by the Cochlea travel along these nerves and is then sent to the brain.

Question 6

Eustachian Tube

Answer 6

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

Question 7

Pinna

Answer 7

The outer eater. Collects sound waves and funnels them into the ear canal.