Stapedius muscle
The stapedius is the smallest skeletal muscle in the human body. At just over one millimeter in length, its purpose is to stabilize the smallest bone in the body, the stapes or stirrup bone of the middle ear.
| Stapedius | |
|---|---|
The medial wall and part of the posterior and anterior walls of the right tympanic cavity, lateral view. | |
Stapedius
Bones and muscles in the tympanic cavity in the middle ear | |
| Details | |
| Origin | Walls of pyramidal eminence |
| Insertion | Neck of stapes |
| Artery | Stapedial branch of posterior auricular artery |
| Nerve | Facial nerve (nerve to stapedius) |
| Actions | Control the amplitude of sound waves to the inner ear |
| Identifiers | |
| Latin | musculus stapedius |
| MeSH | D013198 |
| TA98 | A15.3.02.062 |
| TA2 | 2103 |
| FMA | 49027 |
| Anatomical terms of muscle | |
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