Innervation of the muscles of the middle ear (mnemonic)

Last revised by Owen Kang on 26 Apr 2020

A useful mnemonic to remember innervation of the muscles of the middle ear is:

  • ST

Mnemonic

  • S: stapedius is supplied by a branch of the facial nerve - the Seventh cranial nerve. It is also the Smallest muscle in the body, and inserts onto the neck of Stapes.
  • T: tensor tympani is supplied by a branch of V3, the Trigeminal nerve

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