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Antitragicus

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Nerve  Facial nerve
Latin  Musculus antitragicus
Antitragicus
Origin  Outer part of the antitragus
Insertion  Cauda helicis and antihelix
Artery  Auricular branch of superficial temporal and auricular branches of posterior auricular artery
Actions  Modifies the auricular shape

The Antitragicus is an intrinsic muscle of the outer ear.

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.

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.

The helicis minor is developmentally derived from the second pharyngeal arch.

References

Antitragicus Wikipedia


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