Question

question 20 when yaroslav listens to music, the sound waves cause which of the following to vibrate first? eardrum cochlea hammer, anvil, and stirrup oval window

Explanation:

Sound waves first cause the eardrum (tympanic membrane) to vibrate. The vibrations are then transmitted through the hammer (malleus), anvil (incus), and stirrup (stapes) to the oval - window and then to the cochlea. So the first structure to vibrate is the eardrum.

Answer:

D. Eardrum