Chapter 53 and 54 TEST

Play an AI-generated podcast conversation about this lesson

Which structure lies above the stereocilia of the hair cells?

Modiolus

Tectorial membrane (correct)

Basilar membrane

Round window

What begins the neural transduction of auditory signal?

Hyperpolarization of hair cells

Movement of the basilar membrane

Bending of the stereocilia (correct)

Depolarization of hair cells

Which type of hair cells are responsible for transmitting approximately 90% of auditory signals?

Inner hair cells (correct)

Outer hair cells

Both inner and outer hair cells equally

None of the above

How many times more outer hair cells are there compared to inner hair cells?

What is the potential role of outer hair cells in relation to inner hair cells?

Controlling sensitivity for different sound pitches Signup and view all the answers

Which component of the cochlea contains fibers that vibrate like a musical reed?

Basilar membrane Signup and view all the answers

What is the function of the round window in the cochlea?

To decompress acoustic energy that enters the cochlea Signup and view all the answers

What determines the frequency of sound perceived?

Position along the basilar membrane where hair cells are stimulated Signup and view all the answers

How is sound intensity expressed?

In decibels Signup and view all the answers

What is the threshold for citric acid to be perceived as sour?

2 mM Signup and view all the answers

Which structure functions to transmit vibrations in the air to the cochlea?

The Tympanic Membrane Signup and view all the answers

What is the purpose of the attenuation reflex in the ossicular system?

To protect the cochlea Signup and view all the answers

Which muscle is the smallest skeletal muscle in the body?

Stapedius Signup and view all the answers

What is the function of the organ of Corti?

To generate nerve impulses Signup and view all the answers

What is the role of the ossicles in the auditory system?

To transmit sound waves to the cochlea Signup and view all the answers

What is the purpose of the tympanic membrane being larger than the oval window?

To amplify sound vibrations Signup and view all the answers

Which two muscles are involved in the attenuation reflex?

Stapedius and tensor tympani Signup and view all the answers

What is the purpose of the attenuation reflex in reducing sound transmission?

To dampen sound vibrations Signup and view all the answers

Which part of the cochlea contains the hair cells?

Scala media Signup and view all the answers

What causes back and forth movement of the tympanic membrane?

Sound waves Signup and view all the answers