Corpus: Posterior auricular muscle
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Synonym: posterior ear muscle
1. Definition
The musculus auricularis posterior is a mimic muscle that belongs to the group of external ear muscles.
2. Course
The origin of the posterior auricular muscle is at the mastoid process. It attaches to the posterior edge of the ear. When contracted, it exerts a backward pulling action on the auricle.
3. Innervation
The posterior auricular muscle is innervated by the posterior auricular nerve of the facial nerve (VII).