Ear anatomy

What is the cochlear nerve responsible for?

• Transmitting visual information from the retina to the brain.

• Transmitting auditory information from the cochlea to the brain, allowing for the perception of sound.

• Regulating balance and spatial orientation in the inner ear.

• Controlling the movement of the facial muscles.

What is the function of the eardrum?

• It helps in the production of sound.

• It vibrates in response to sound waves and transmits these vibrations to the ossicles in the middle ear.

• It protects the inner ear from infections.

• It regulates the pressure in the ear canal.

What is the outer ear's role in hearing?

• It amplifies sound waves before they enter the ear canal.

• It collects sound waves and directs them into the ear canal towards the eardrum.

• It filters out background noise to enhance sound quality.

• It converts sound waves into electrical signals for the brain.

What are the three main parts of the ear?

• Outer ear, middle ear, and inner ear.

• Outer ear, cochlea, and eustachian tube.

• Outer ear, tympanic membrane, and auditory canal.

• Inner ear, middle ear, and auditory nerve.

What is the function of the pinna (auricle)?

• To collect and direct sound waves into the ear canal.

• To produce earwax for protection.

• To amplify sound waves before they enter the ear canal.

• To balance the body by detecting changes in head position.

How does sound travel through the ear?

• Sound travels through the ear by entering the outer ear, vibrating the eardrum, moving through the ossicles in the middle ear, and then into the cochlea in the inner ear.

• Sound travels through the ear by being absorbed by the outer ear and converted into electrical signals immediately.

• Sound travels through the ear by bouncing off the eardrum and directly entering the brain.

• Sound travels through the ear by passing through the ear canal and being filtered by the outer ear before reaching the inner ear.

What is the role of hair cells in the cochlea?

• They are responsible for producing sound waves.

• They convert mechanical sound vibrations into electrical signals sent to the brain.

• They amplify sound waves before they reach the auditory nerve.

• They filter out background noise before transmitting signals.

What is the role of the semicircular canals?

• They are responsible for hearing and sound localization.

• They help in maintaining balance and spatial orientation.

• They are involved in the production of earwax.

• They assist in the regulation of blood pressure.

What is the function of the incus in the ear?

• To amplify sound waves before they enter the inner ear.

• To transmit sound vibrations from the malleus to the stapes.

• To protect the inner ear from loud noises.

• To convert sound vibrations into electrical signals.

What is the cochlea, and what is its function?

• A spiral-shaped structure in the inner ear that converts sound vibrations into electrical signals for the brain to interpret.

• A part of the outer ear that helps in sound localization.

• A fluid-filled chamber that regulates balance and spatial orientation.

• A bone structure that amplifies sound waves before they reach the inner ear.