C07 - The Ear, Hearing and Balance

Question 1

Define Hearing?

Answer 1

The process of translating air pressure waves into electrical signals for the brain to interpret.

Question 2

Connects the Middle Ear to the Cavity at the back of the Nose. What am I?

Answer 2

Eustachian Tube.

Question 3

What is the purpose of the Eustachian Tube?

Answer 3

Helps to equalise Air Pressure in the Middle Ear.

Question 4

Define the Vestibular System?

Answer 4

Assists with maintaining Balance and Spatial Awareness.

Question 5

Which position is the Utricle found in the Vestibular System?

Answer 5

Orientated horizontally.

Question 6

Which position is the Saccule found in the Vestibular System?

Answer 6

Orientated vertically.

Question 7

Both Utricle and Saccule contain what hair-like sensor?

Answer 7

Otoliths.

Question 8

Semi-circular Canals detect which type of acceleration?

Answer 8

Angular.

Question 9

Utricle and Saccule detect which type of acceleration?

Answer 9

Linear.

Question 10

The Auditory Canal leads to the ear drum which separates what?

Answer 10

The Outer Ear from the Middle Ear.

Question 11

What is the range frequency a human can hear?

Answer 11

20 to 20,000 Hertz.

Question 12

What is 1 Hertz?

Answer 12

One vibration per second.

Question 13

True or False. Exposure to high levels of sound can cause hearing loss?

Answer 13

True.

Question 14

What does NIHL stand for?

Answer 14

Noise Induced Hearing Loss.

Question 15

What is the acceptable figure of NIHL?

Answer 15

90 dB.

Question 16

Any defect of the Middle of Outer Ear which prevents sound from being transmitted to the Inner Ear is known as?

Answer 16

Conductive Deafness.

Question 17

Define Presbycusis?

Answer 17

Age related hearing loss.

Question 18

Define Tinnitus?

Answer 18

Continually hearing sounds and noises.

Question 19

Define Motion Sickness?

Answer 19

A mismatch between movements the brain detects visually and through the Vestibular System.

Question 20

The most common cause of mismatch is ‘____’ which are detected by the ‘____’ but not the ‘____’ (3)?

Answer 20

• Accelerations.
• Vestibular System.
• Visual System.

Question 21

True or False. Motion Sickness can also be triggered by Vibrations?

Answer 21

True.

Question 22

What is the best treatment for Motion Sickness?

Answer 22

Using external cues to fix the mismatch, such as looking at the horizon.