stapedius muscle

Origin

• internal walls of the pyramidal eminence in the tympanic cavity

Insertion

• neck of the stapes

Action

• dampens vibration of stapes
• draws head of stapes backward in response to a loud noise (protective response)

Innervation

facial nerve (CN VII)

More general terms

• skeletal muscle (voluntary muscle)

Additional terms

• stapes

Component of

• middle ear