Stapedius

The stapedius is the tiny muscle in the middle ear that attaches to the posterior aspect of the neck of the stapes, which when contracted dampens vibrations passed to the cochlea via the oval window.  The muscle is anchored within the petrous temporal bone and emerges into the tympanic cavity at the pyramidal process. It is supplied by a small branch from the facial nerve.

Related pathology

Paralysis of this muscle leads to an hypersensitivity to loud noises (hyperacusis).

Head and neck anatomy
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Article information

rID: 2083
System: Head & Neck
Section: Anatomy
Tags: stub, refs, cases
Synonyms or Alternate Spellings:
  • Stapedius muscle

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