Understanding the Ear: Structure and Function

What is the primary function of the pinna in the outer ear?

• To balance air pressure in the ear

• To amplify sound waves

• To transmit electrical signals to the brain

• To collect and direct sound waves into the auditory canal

Which part of the ear is responsible for vibrating in response to sound waves?

• Eardrum

• Cochlea

• Auditory canal

• Semicircular canals

What is the role of the three small bones in the middle ear?

• To produce sound waves

• To equalize pressure in the ear

• To transmit sound vibrations from the eardrum to the cochlea

• To detect head movements

What is the shape of the cochlea, and what is its primary function?

• Triangular; to detect head movements

• Circular; to balance air pressure

• Spiral; to convert sound vibrations into electrical signals

• Rectangular; to amplify sound

How do the hair-like structures in the cochlea contribute to hearing?

• They convert sound vibrations into electrical impulses

• They amplify sound waves

• They balance air pressure

• They detect head movements

What is the primary function of the semicircular canals in the inner ear?

• To balance air pressure

• To convert sound vibrations into electrical signals

• To detect sound waves

• To sense head movements and maintain balance

How do the semicircular canals help in maintaining balance?

• By amplifying sound waves

• By detecting head movements through fluid motion

• By converting sound vibrations into electrical signals

• By equalizing ear pressure

What is the function of the Eustachian tube in the ear?

• To equalize air pressure between the middle ear and the environment

• To transmit sound vibrations

• To detect head movements

• To convert sound vibrations into electrical signals

Why do our ears 'pop' during changes in altitude?

• To equalize pressure differences between the inside and outside of the ear

• Because of fluid movement in the cochlea

• Due to sound amplification

• To detect head movements

What happens if the Eustachian tube fails to equalize pressure effectively?

• Hearing loss occurs

• The eardrum may burst

• Sound waves are not transmitted

• Balance is disrupted