The Human Ear

What is the middle ear composed of?

• Three tiny bones called ossicles: malleus, incus, and stapes.

• A single large bone called the cochlea.

• Fluid-filled sacs and membranes.

• Cartilage and muscle fibers.

What is the role of the cochlea?

• It amplifies sound waves for better hearing.

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

• It filters out background noise during conversations.

• It helps in maintaining balance and spatial orientation.

What is the role of the auditory nerve?

• To carry sound signals from the cochlea to the brain.

• To transmit visual signals from the retina to the brain.

• To regulate balance and spatial orientation.

• To process taste signals from the tongue to the brain.

What happens when sound waves reach the cochlea?

• They are converted into electrical signals that the brain interprets as sound.

• They are amplified and transmitted to the outer ear.

• They are absorbed by the cochlea and do not affect hearing.

• They are transformed into light signals for visual interpretation.

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What is the purpose of the ear canal?

• To amplify sound waves before they reach the eardrum.

• To direct sound waves to the eardrum.

• To protect the inner ear from foreign objects.

• To convert sound waves into electrical signals.

What is the function of the oval window?

• It transmits vibrations from the middle ear to the inner ear.

• It amplifies sound waves before they enter the cochlea.

• It protects the inner ear from loud noises.

• It converts sound waves into electrical signals.

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What is the function of the eardrum?

• To vibrate in response to sound waves and transmit them to the middle ear.

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

• To protect the inner ear from loud noises.

• To convert sound waves into electrical signals.

What are the three main parts of the human ear?

• Outer Ear, Middle Ear, Inner Ear

• Outer Ear, Inner Ear, Eustachian Tube

• Outer Ear, Cochlea, Auditory Nerve

• Middle Ear, Inner Ear, Semicircular Canals

What connects the outer ear to the eardrum?

• Ear Canal

• Eustachian Tube

• Auditory Nerve

• Cochlea

What is the role of the pinna?

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

• To amplify sound waves before they enter the ear.

• To protect the inner ear from foreign objects.

• To convert sound waves into electrical signals.