039 The Function of the Organ of Corti

In this episode, Leslie Samuel explores the function of the organ of Corti, a key component in the auditory system. The video explains how sound waves travel through the ear, causing vibrations in the cochlea, and how these vibrations are interpreted by the brain as sound. The organ of Corti, located in the cochlea, plays a crucial role in this process, with its inner and outer hair cells modulating sound signals. The episode also highlights the cochlea's structure and the movement of the tectorial membrane. Viewers are encouraged to visit interactive-biology.com for more resources.

What is the primary function of the tympanic membrane in the auditory process?

• To protect the inner ear from loud noises

• To vibrate in response to sound waves

• To amplify sound waves

• To transmit signals directly to the brain

Which part of the cochlea is located above the basilar membrane?

• Organ of Corti

• Cochlear duct

• Scala vestibuli

• Scala tympani

What is the role of the tectorial membrane in the organ of Corti?

• To transmit sound waves to the brain

• To move in a windshield wiper fashion and stimulate hair cells

• To separate the scala vestibuli and scala tympani

• To protect the hair cells

What happens to the cilia on the hair cells when the tectorial membrane moves?

• They send signals to the outer ear

• They bend, initiating a signal to the brain

• They become rigid and stop vibrating

• They detach from the hair cells

Which hair cells are primarily responsible for sending auditory signals to the brain?

• Both inner and outer hair cells equally

• Inner hair cells

• Outer hair cells

• Neither, it's the basilar membrane

How do outer hair cells contribute to the hearing process?

• By sending signals directly to the brain

• By amplifying and modulating the response of inner hair cells

• By protecting the inner hair cells from damage

• By converting sound waves into electrical signals

What is the main function of the organ of Corti?

• To produce earwax

• To separate the scala vestibuli and scala tympani

• To protect the cochlea from damage

• To detect sound frequencies and send signals to the brain