Exam 4: Hearing and Equilibrium

Front

What is the primary function of the external ear?

Back

Collects and directs sound waves.

Front

What does the inner ear consist of?

Back

A membranous duct contained within bone.

Front

What is the function of hair cells in the spiral organ of Corti?

Back

They initiate an electrical impulse when bent.

Front

Which part of the ear is responsible for amplifying and transmitting sound waves?

Back

Middle ear.

Front

What part of the ear is responsible for processing different frequencies of sound?

Back

Cochlear duct.

Front

What is the role of the cochlea in hearing?

Back

Converts sound vibrations into electrical signals.

Front

What structure in the ear helps maintain balance?

Back

Semicircular canals.

Front

What is the function of the eardrum?

Back

Vibrates in response to sound waves and transmits them to the middle ear.

Front

What are the ossicles and their function?

Back

Three small bones in the middle ear that amplify sound vibrations.

Front

What is the auditory nerve's role in hearing?

Back

Transmits electrical signals from the cochlea to the brain.