Ear Anatomy and Function

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

• The eardrum in the middle ear helps in balancing the body

• The eardrum in the middle ear has no specific function

• The eardrum in the middle ear filters out unnecessary sounds

• The function of the eardrum in the middle ear is to vibrate in response to sound waves and transmit the vibrations to the inner ear.

What are the three semicircular canals in the inner ear responsible for?

• The three semicircular canals in the inner ear are responsible for hearing

• The three semicircular canals in the inner ear are responsible for smelling

• The three semicircular canals in the inner ear are responsible for taste

• The three semicircular canals in the inner ear are responsible for detecting changes in head rotation and maintaining balance.

Explain the process of sound transmission through the ear from the outer to the inner ear.

• Sound waves are absorbed by the outer ear and then travel directly to the brain

• Sound waves enter the outer ear and travel through the ear canal to the eardrum, causing it to vibrate. The vibrations are then transmitted through the middle ear bones to the cochlea in the inner ear, where they are converted into electrical signals and sent to the brain for interpretation.

• The eardrum does not vibrate in response to sound waves

• The middle ear bones do not play a role in transmitting vibrations to the inner ear

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NGSS.MS-PS4-2

What is the role of the cochlea in the inner ear?

• The cochlea in the inner ear plays a role in regulating blood flow to the ear.

• The cochlea in the inner ear helps with maintaining balance and spatial orientation.

• The cochlea in the inner ear is responsible for producing earwax to protect the ear canal.

• The cochlea in the inner ear is responsible for converting sound vibrations into electrical signals that can be interpreted by the brain.

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NGSS.MS-LS1-8

What is the purpose of the Eustachian tube in the middle ear?

• To produce earwax

• To regulate body temperature

• The purpose of the Eustachian tube in the middle ear is to equalize air pressure between the middle ear and the atmosphere.

• To improve hearing ability

How does the inner ear convert sound waves into electrical signals for the brain to interpret?

• The inner ear converts sound waves into electrical signals through the movement of hair cells in the cochlea, which then stimulate the auditory nerve to send signals to the brain for interpretation.

• The inner ear converts sound waves into electrical signals by using the eardrum to amplify the vibrations and send them to the brain.

• The inner ear converts sound waves into electrical signals through the movement of tiny bones in the ear canal.

• The inner ear converts sound waves into electrical signals by directly sending them to the brain without any intermediate process.

Explain the role of the auditory nerve in the hearing process.

• The auditory nerve carries electrical signals from the inner ear to the brain, allowing us to perceive and interpret sound.

• The auditory nerve helps in balancing the body and maintaining posture.

• The auditory nerve is involved in controlling the sense of taste.

• The auditory nerve is responsible for regulating blood flow to the inner ear.

Which section is considered the inner ear

Which section is considered the outer ear

Which section is considered the middle ear