What is the function of the outer ear?

What is the function of the outer ear?

• A. Collects and funnels sound waves toward the middle ear.
• B. Transduces energy into neural signals.
• C. Absorbs all sound energy.
• D. Produces ear cerumen.

Answer: (A)

The outer ear’s job is to collect sound and guide it toward the middle ear. The visible part (the pinna) and the external auditory canal shape and direct incoming waves, helping with localization cues and delivering the signal efficiently to the eardrum. Transduction into neural signals happens later in the inner ear’s cochlea, not in the outer ear. The idea that the outer ear absorbs all sound energy isn’t accurate—some energy is absorbed or reflected, but the audible signal continues inward. Producing ear cerumen is a protective, lubricating role of glands in the ear canal, not the main function of collecting and funneling sound toward the middle ear.

The outer ear’s job is to collect sound and guide it toward the middle ear. The visible part (the pinna) and the external auditory canal shape and direct incoming waves, helping with localization cues and delivering the signal efficiently to the eardrum. Transduction into neural signals happens later in the inner ear’s cochlea, not in the outer ear. The idea that the outer ear absorbs all sound energy isn’t accurate—some energy is absorbed or reflected, but the audible signal continues inward. Producing ear cerumen is a protective, lubricating role of glands in the ear canal, not the main function of collecting and funneling sound toward the middle ear.