Tragicus
The tragicus (muscle of tragus or Valsalva muscle[1]) is an intrinsic muscle of the outer ear.
| Tragicus | |
|---|---|
 The muscles of the auricula. (Tragicus visible at bottom right.) | |
| Details | |
| Origin | Base of the tragus |
| Insertion | Apex of the tragus |
| Artery | Auricular branches of posterior auricular and auricular branch of occipital arteries |
| Nerve | Facial nerve |
| Actions | Increase the opening of the external acoustic meatus |
| Identifiers | |
| Latin | Musculus tragicus |
| TA98 | A15.3.01.039 |
| TA2 | 2095 |
| FMA | 48974 |
| Anatomical terms of muscle | |
It is a short, flattened vertical band on the lateral surface of the tragus.[1]
While the muscle modifies the auricular shape only minimally in the majority of individuals, this action could increase the opening of the external acoustic meatus in some.[2]
Additional images
Anatomy of human ear
See also
References
This article incorporates text in the public domain from page 1035 of the 20th edition of Gray's Anatomy (1918)
- "Definition: 'Tragius (muscle)'". MediLexicon International Ltd. Retrieved 9 March 2013.
- "Tragicus". AnatomyExpert. Archived from the original on 21 July 2013. Retrieved 9 March 2013.
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