Auditory System Quiz

What is the function of the pinna in the auditory system?

• To amplify sound waves

• To convert sound waves into neural signals

• To localize sound

• To protect the inner ear

Which part of the ear leads to the tympanic membrane (eardrum)?

• Auditory canal

• Pinna

• Cochlea

• Oval window

What are the three smallest bones in the human body located in the middle ear?

• Malleus, Incus, Cochlea

• Malleus, Incus, Stapes

• Cochlea, Tympanic membrane, Oval window

• Pinna, Auditory canal, Basilar membrane

What is the function of the cochlea?

• To amplify sound waves

• To convert sound waves into neural signals

• To filter out high-frequency sounds

• To balance fluid levels in the inner ear

What type of fluid fills the chamber of the cochlea?

• Air

• Water

• Endolymph

• Blood

How are sound frequencies coded in the auditory system?

• By amplitude differences

• By phase differences

• By the length of the cochlea

• By place coding and temporal coding

Which part of the basilar membrane resonates with high frequencies?

• Base (near oval window)

• Middle

• Apex (far end of cochlea)

• Tympanic membrane

How does the auditory system utilize temporal coding for frequencies below 4 kHz?

• By encoding the phase differences of sound waves

• By encoding the rate of action potentials along the auditory nerve

• By analyzing the amplitude of sound waves

• By detecting the intensity differences between the ears

What is the maximum frequency at which Spiral Ganglions can fire action potentials?

• 100 Hz

• 1000 Hz

• 3000 Hz

• 4000 Hz

How does the auditory system utilize the volley principle for frequencies above 1000 Hz?

• By synchronizing firing rates of multiple ganglion cells

• By increasing the amplitude of sound waves

• By adjusting the tension of the basilar membrane

• By modulating the release of neurotransmitters