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Muscle of the outer ear From Wikipedia, the free encyclopedia
The antitragicus is an intrinsic muscle of the outer ear.
| Antitragicus | |
|---|---|
The muscles of the ear (antitragicus visible at bottom center). | |
| Details | |
| Origin | Outer part of the antitragus |
| Insertion | Cauda helicis and antihelix |
| Artery | Auricular branch of superficial temporal and auricular branches of posterior auricular artery |
| Nerve | Facial nerve |
| Actions | Modifies the auricular shape |
| Identifiers | |
| Latin | musculus antitragicus |
| TA98 | A15.3.01.042 |
| TA2 | 2098 |
| FMA | 48980 |
| Anatomical terms of muscle | |
In human anatomy, the antitragicus arises from the outer part of the antitragus, and is inserted into the cauda helicis (or tail of the helix) and antihelix.[1][2]
The function of the muscle is to adjusts the shape of the ear by pulling the antitragus and cauda helicis towards each other. While the muscle modifies the auricular shape only minimally in the majority of individuals, this action could increase the opening into the external acoustic meatus in some.[1]
The helicis minor is developmentally derived from the second pharyngeal arch.[1]
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