Tragicus
The tragicus (muscle of tragus or Valsalva muscle[1]) is an intrinsic muscle of the outer ear.
Tragicus | |
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![]() 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 |
TA | A15.3.01.039 |
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
gollark: I'm standing right next to it, but nothing happens when I do `modem.transmit(1, 0, "nanomachines", "setInput", [lots of numbers because it's in a for loop], true)`.
gollark: <@204906817816363009> I'm trying to use an OC relay controlled via CC.
gollark: Well, that too, but mostly nanomachines.
gollark: Can anyone help with accessing an OC relay via CC?
gollark: Degenerating into pointlessness much?
See also
- Intrinsic muscles of external ear
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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