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WorksheetsM9.2 Ear Anatomy and Functions
Total questions: 25
Worksheet time: 13mins
What are the main components of the ear?
Outer Ear, Middle Ear, Inner Ear
Outer Ear, Inner Ear, Brain
Middle Ear, Brain, Nose
Inner Ear, Nose, Throat
What is one of the functions of the ear?
Detecting light
Detecting sounds by receiving vibrations in the air
Detecting taste
Detecting smell
What do the three divisions of the ear do with vibrations from the air?
Turn them into light signals
Turn them into nerve impulses for the brain to recognize as sounds
Turn them into taste signals
Turn them into smell signals
What is the function of the outer ear?
To detect light and help us balance
To receive vibrations which cause the eardrum to vibrate
To help us taste food
What is the function of the middle ear?
To detect light
To transmit vibrations from the ear drum
To taste food
Which bones are found in the middle ear?
Hammer, anvil and stirrup
Anvil, Hammer, Cochlea
Tympanic, Eustachian, Auditory
How long does the protection from the aural reflex last?
5 minutes
10 minutes
15 minutes
20 minutes
What structure in the inner ear is covered in hair-like cells?
Semi-circular canals
Eustachian tube
Basilar membrane
Auditory nerve
What is the function of the ossicles in the middle ear?
To detect sound vibrations
To transmit vibrations to the inner ear
To protect against loud noises
To refresh air in the middle ear
What does the basilar membrane react to?
Air pressure
Movement in fluid
Sound waves
Light waves
What should employers provide for noise levels above normal speech levels?
Hearing protection and hearing protection zones
Noise-canceling headphones
Soundproof rooms
What must employers do if ambient noise is above where normal speech cannot be heard at 2 meters?
Ignore the noise
Provide earplugs
Assess the risk to workers' health and provide information and training
Move workers to a quieter area
What is tinnitus?
A type of hearing aid
A condition of improved hearing
Ringing, whistling, buzzing, or humming in the ears
A method to test hearing
What is recommended for an engineer to test their hearing ability?
A vision test
A routine audiogram
A blood test
A physical fitness test
What is the primary role of the cochlea in the ear?
To detect light
To convert sound vibrations into nerve impulses
To balance the body
To produce earwax
Which part of the ear is responsible for maintaining balance?
Outer ear
Middle ear
Inner ear
Eardrum
What is the function of the eardrum?
To amplify sound
To vibrate in response to sound waves
To produce sound
To detect smell
What is the function of the semicircular canals in the ear?
To detect sound waves
To maintain balance and spatial orientation
To amplify sound
To produce earwax
Which part of the ear connects to the throat to equalize pressure?
Eustachian tube
Auditory nerve
Cochlea
Basilar membrane
What is the role of the auditory nerve?
To balance the body
To transmit sound vibrations to the brain
To produce earwax
To detect light
By how much are noise levels reduced by wearing ear plugs?
20 dB
10 dB
50 dB
By how much are noise levels attenuated by the wearing of ear defenders
50 dB
40dB
20 dB
When sound levels are above what value should hearing protection be worn by aircraft maintenance engineers?
115dB
100dB
150 dB
What does NIHL stand for in the context of hearing
Not in hearing level
Never inside helicopter landing
Noise induced hearing loss
What is 'presbycusis'
The gradual deterioration of hearing with age
Only being able to hear high pitched sounds
Having ear ache
