The Nervous System, Ear, Hearing and Balance: DGCA Air Regulations questions

Question 1

The outer, middle and inner ear are filled with:

Accepted Answer

Air, Air, Liquid.

Answer

Air, Liquid, Liquid.

Answer

Liquid, Air, Air.

Answer

Liquid, Liquid, Air.

Question 2

What is the purpose of the Eustachian tube?

Accepted Answer

To allow ambient pressure to equalize on both sides of the ear drum.

Answer

To pass sound waves across the middle ear to the auditory nerve.

Answer

To allow ambient pressure to equalize on the middle ear side of the ear drum.

Answer

To allow ambient pressure to equalize on both sides of the vestibular apparatus.

Question 3

What causes conductive deafness?

Accepted Answer

Damage to the ossicles or the eardrum.

Answer

Damage to the outer ear.

Answer

Damage to the pinna.

Answer

Damage to the middle ear.

Question 4

What is noise induced hearing loss (NIHL)?

Accepted Answer

Loss of hearing due to damage to the cochlea.

Answer

Loss of hearing due to damage to the ossicles.

Answer

Loss of hearing due to damage to the vestibular apparatus.

Answer

Loss of hearing due to damage to the middle ear.

Question 5

On what does NIHL depend?

Accepted Answer

Both the intensity and duration of the noise above 90 dB.

Answer

Both the intensity and duration of the noise above 100 dB.

Answer

The duration of the noise above 100 dB.

Answer

The duration of the noise above 110 dB.

18 more questions in this chapter, free with an account