CAOHC Physics of Sound and Anatomy 2

Question 1

What is the function of the ossicular chain in the middle ear?

Accepted Answer

To amplify and transmit sound vibrations from the tympanic membrane to the oval window

Answer

To produce the endolymph fluid in the inner ear

Answer

To equalize air pressure between middle ear and environment

Answer

To convert sound waves into electrical nerve impulses

Question 2

Which structure in the cochlea contains the sensory hair cells responsible for hearing?

Accepted Answer

The organ of Corti

Answer

The Eustachian tube

Answer

The semicircular canals

Answer

The tympanic membrane

Question 3

What is the frequency range of normal human hearing?

Accepted Answer

Approximately 20 Hz to 20,000 Hz

Answer

100 Hz to 8,000 Hz

Answer

500 Hz to 4,000 Hz

Answer

50 Hz to 50,000 Hz

Question 4

What property of sound determines its perceived loudness?

Accepted Answer

Amplitude (intensity)

Answer

Frequency

Answer

Wavelength

Answer

Phase

Question 5

How does the basilar membrane in the cochlea separate different sound frequencies?

Accepted Answer

Through tonotopic organization with the base responding to high frequencies and the apex to low frequencies

Answer

By vibrating at the same frequency throughout its entire length

Answer

Through chemical neurotransmitter selection at the hair cells

Answer

By rotating within the cochlear duct

Question 6

What is the function of the Eustachian tube?

Accepted Answer

To equalize air pressure between the middle ear cavity and atmospheric pressure

Answer

To transmit sound vibrations from outer to inner ear

Answer

To produce cerebrospinal fluid for the inner ear

Answer

To protect the cochlea from excessive noise