Multiple choice

Which part of the external ear vibrates according to the sound waves?

  1. Pinna

  2. Ear canal

  3. Ear drum

  4. Wax glands

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The ear drum, or tympanic membrane, is a thin, cone-shaped membrane that separates the external ear from the middle ear. It vibrates in response to sound waves entering the ear canal.