The muscle marked by 2nd arrow is supplied by?
Correct Answer: Facial nerve
Description: Ans. B. Facial nerveThe stapedius is the smallest skeletal muscle in the human body. The stapedius emerges from a pinpoint foramen in the apex of the pyramidal eminence (a hollow, cone-shaped prominence in the posterior wall of the tympanic cavity), and inserts into the neck of the stapes.it is innervated by the nerve to stapedius, a branch of the facial nerve.it dampens the vibrations of the stapes by pulling on the neck of that bone. It prevents excess movement of the stapes, helping to control the amplitude of sound waves from the general external environment to the inner ear.
Category:
Anatomy
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