Ear

Question 1

What is the Outer Ear filled with

Answer 1

Air

Question 2

Pinna

Answer 2

Made up of cartilage

Collects vibrations from the air and channels them into air

Question 3

Auditory canal

Answer 3

Carries vibrations to the eardrum

Question 4

Eardrum

Answer 4

A tightly stretched membrane

Vibrates when stimulated by vibrations in the auditory canal

Question 5

Ossicles

Answer 5

3 bones
Hammer
Anvil
Stirrup - smallest bone in the body
Amplify vibrations and pass them to oval window

Question 6

Eustachian Tube

Answer 6

Not really part of the ear
Connects middle ear to pharynx
Stabilises pressure in ear

Question 7

Inner ear is filled with

Answer 7

Lymph

Question 8

Cochlea

Answer 8

Spiral tube that functions in hearing

Question 9

How do we hear

Answer 9

• Vibrations pass into the lymph in the cochlea through the oval window
• As they pass they stimulate receptors that form the organ of Corti
• Impulses pass from these receptors to the cerebrum along the auditory nerve

Question 10

3 Semi-Circular Canals

Answer 10

At right angles to each other

Functions in balance

Question 11

How do we Balance

Answer 11

• Receptors in the semicircular canals defect when our head is not stable
• They sens impulses to the cerebellum of of the brain through the vestibular nerve

Question 12

Hearing Disorder

Answer 12

Glue ear

Question 13

Cause

Answer 13

Too much fluid collecting in middle ear

Build-up of fluid is often from a viral infection

Question 14

Symptoms

Answer 14

Some loss of hearing

Pain or discomfort

Question 15

Corrective Measures

Answer 15

Decongestant drugs break up fluid and allow it to drain through Eustachian tubes
Grommets placed in ear drums