✅The Ear

Question 1

Where does the structure of the ear sit?

Answer 1

In the temporal bone

Question 2

What are the two parts of the outer ear?

Answer 2

Pinna

Auricle

Question 3

What does the outer ear work as?

Answer 3

A transmitter/receiver that can direct the flow of air particles.

Question 4

What does the external auditory meatus contain?

Answer 4

Glands which produce wax

Question 5

What is the external auditory meatus surrounded by?

Answer 5

Surrounded by cartilage initially then bone

Question 6

What does the external auditory meatus filter?

Answer 6

Dust and bugs

Question 7

What is the main thing that the external auditory meatus do?

Answer 7

It amplifies sound wave.

-particularly those with high frequency sounds.

Question 8

How long is the external auditory meatus?

Answer 8

2 1/2 cm long, curved, uphill.

Question 9

Where does the external auditory meatus end?

Answer 9

At the ear drum

Question 10

What is the ear drum called?

Answer 10

The Tympanic membrane

Question 11

Describe the features of the ear drum?

Answer 11

Very thin
Layer of skin
Layer of mucous membrane
Layer of fibrous tissue

Question 12

What vibrations occur with different frequencies?

Answer 12

Low frequencies- all of the drum vibrates

High frequencies- only certain parts vibrate

Question 13

What is sound?

Answer 13

A series of vibrations

Question 14

What is the middle ear called?

Answer 14

The tympanic cavity

Question 15

Where does the auditory tube flow to?

Answer 15

Naso-pharynx

Question 16

What are the 3 ossicles in the middle ear?

Answer 16

Malleus- hammer
Incus- Anvil
Stape- Stirrup

Question 17

What do the ossicles do?

Answer 17

They can stop or calm vibration

They also increase movement so that there is enough sound to transform into inner ear

Question 18

What are the two muscles of the inner ear?

Answer 18

The tensor tympani

The stapedius

Question 19

What do these muscles do?

Answer 19

Manage the reduction of vibration

Question 20

What does the tensor tympani do?

Answer 20

Reduces movement when chewing so we cannot hear it.

Question 21

What doe the stirrup go to?

Answer 21

Oval window

Question 22

What is the inner ear known as?

Answer 22

The bony labyrinth

Question 23

What are the two sections of the inner ear?

Answer 23

Cochlear

Vestibule

Question 24

Describe 3 things about the semi-circular canals

Answer 24

Fluid-contained
Hair cells
Signals head movement

Question 25

What happens when the oral window vibrates?

Answer 25

It disrupts fluid in cochlea

Question 26

What happens when fluid in the cochlea is disrupted?

Answer 26

Results in vibration in floor Of the cochlear ( Bailar membrane) which attaches to the organ of Corti (rows of hair cells)