Ear Quiz

Sound is measured in:

• milliamps

• dB

• millisieverts

• mmHg

The Eustachian tube connects the:

• middle ear and the inner ear

• middle ear and the throat

• semicircular canals

• auditory duct and the inner ear

The group of tiny bones (the hammer, anvil, and stirrup) are situated in:

• the middle ear

• the inner ear

• the outer ear

• the maxillary sinus

The human ear is capable of perceiving vibrations between the frequencies:

• 20000 - 40000 Hz

• 0 - 16 Hz

• 30 - 15000 dB

• 20 - 20000 Hz

Which part of the ear could be affected due to air pressure changes during climb and/or descent?

• The Eustachian tube and the tympanic membrane (ear drum)

• The semicircular canals

• The cochlea

• The saccules and utricles

Which part of the inner ear is responsible for the perception of sound?

• The semicircular canals

• The sacculus and utriculus

• The cochlea

• The Eustachian tube

Any prolonged exposure to noise in excess of 90 dB can result in:

• noise induced hearing loss

• conductive hearing loss

• presbycusis (effects of aging)

• a ruptured ear drum

Conductive hearing loss can be caused by: 1. damage to the ossicles in the middle ear caused by infection or trauma 2. a damage of the auditory nerve 3. an obstruction in the outer ear 4. a ruptured tympanic membrane

• 2, 3, and 4 are correct, 1 is false

• 1, 2, and 3 are correct, 4 is false

• 1, 3, and 4 are correct, 2 is false

• 1, 2, 3, and 4 are correct

Noise induced hearing loss is influenced by:

• the duration and intensity of a noise

• the suddenness of onset of a noise

• the duration of a noise but not its intensity

• the intensity of the noise but not its duration

Presbycusis causes initial loss of:

• conductive hearing

• low tones

• low and high tones equally

• high tones