Location
The superior auricular muscle is a small muscle located in the head and neck region. It is located in the posterior region of the ear, near the base of the skull. The superior auricular muscle is one of the muscles of facial expression, and is part of the facial nerve (cranial nerve VII) system.
Structure
The superior auricular muscle is a small, triangular-shaped muscle that arises from the posterior border of the parietal bone and the superior nuchal line of the occipital bone. It inserts into the skin and superficial fascia of the ear and the scalp. The superior auricular muscle is innervated by the facial nerve (cranial nerve VII).
Function
The main function of the superior auricular muscle is to move the ear and the scalp. It can help to lift the ear and the scalp, or it can help to pull the ear and the scalp backwards. The superior auricular muscle also plays a role in facial expression, as it can help to create wrinkles in the scalp and forehead region when it contracts.
Clinical Significance
The superior auricular muscle may be clinically significant in a few different ways. One potential issue is that the superior auricular muscle may be involved in the development of facial wrinkles and lines, particularly in the scalp and forehead region. This may be of concern to some individuals who are interested in maintaining a youthful appearance.
Additionally, the superior auricular muscle may be affected by certain medical conditions, such as Bell’s palsy, which is a type of facial paralysis that can result from damage to the facial nerve. In such cases, the superior auricular muscle may be weakened or paralyzed, leading to problems with facial expression and ear movement.
