Transduction of Sound Quiz

What creates sound waves or pressure waves in the air?

• Vibrating objects

• Moving light

• Static objects

• Electric currents

What part of the ear first vibrates in response to sound waves?

• Cochlea

• Stapes

• Tympanum

• Oval window

What is the primary function of inner hair cells?

• To produce sound

• To protect the cochlea

• To convey auditory information to the brain

• To fine-tune sound waves

What happens when stereocilia bend?

• They produce sound

• They transmit light

• They break

• They open a gated ion channel

What determines the intensity (volume) of sound?

• Thickness of the tympanum

• Frequency of sound waves

• Number of hair cells stimulated

• Length of the cochlea

Which part of the ear contains the cochlea, semicircular canals, and vestibular sacs?

• Outer Ear

• Middle Ear

• Inner Ear

• Tympanic Membrane

what is the order of sound transmission through the ear

• Outer ear -> Ear canal -> Eardrum -> Middle ear (ossicles) -> Oval window of cochlea -> Auditory nerve
• Outer ear -> Eardrum -> Ear canal -> Middle ear (ossicles) -> Oval window of cochlea -> Auditory nerve
• Eardrum -> Ear canal -> Outer ear -> Middle ear (ossicles) -> Oval window of cochlea -> Auditory nerve
• Ear canal -> Outer ear -> Eardrum -> Middle ear (ossicles) -> Oval window of cochlea -> Auditory nerve

Story of auditory processing: (correct answer is True - use this to review the steps)

1. Sound waves enter the ear and passes through the external auditory canal.

2. Sound waves vibrate the tympanic membrane (eardrum)

3. Vibrations from the eardrum are transmitted across the middle ear by three tiny bones: Malleus, incus and stapes (hammer, anvil and stirrup)

4. Vibrations are passed from the stirrup to the inner ear through the oval window and into the fluid filled Cochlea.

5. Vibrations travel through the fluid of the cochlea, creating pressure, stimulating the mechanoreceptors on the organ of Corti

6. Organ of Corti sends message through nerve impulse through the cochlear nerve to the brain which interprets the impulse as sound.

• True

• False

What is the function of the ossicles in the middle ear?

• To increase the pressure in the middle ear

• To transmit soundwaves to the inner ear

• To prevent middle ear infections

• To narrow the eustachian tube

what is the function of the semi-circular canals?

• Detect rotational movements and maintain balance
• Enhance sense of smell
• Regulate body temperature
• Control heart rate