Superior auricular muscle

Last revised by Reabal Najjar on 27 Jun 2023

The superior auricular muscle, an extrinsic muscle of the ear, originates from the epicranial aponeurosis and plays a pivotal role in adjusting the position of the auricle.

The superior auricular muscle is a delicate, fan-shaped auricular muscle. Its roots lie within the epicranial aponeurosis and the temporal fascia, converging into a tendon attached superiorly to the auricle. Notably, it is the largest among the extrinsic muscles of the ear.

The muscle inserts into the upper part of the auricle's cranial surface, contributing to its distinctive shape.

The anterior auricular branches of the superficial temporal artery, the posterior auricular branch of the external carotid artery, and the occipital artery predominantly supply blood to this muscle.

The pterygoid plexus, external jugular, and maxillary vein comprise the key venous drainage system for the muscle.

The superior auricular muscle is innervated primarily by the temporal auricular branch of the facial nerve (CN VII), playing a significant role in controlling muscle action.

The muscle acts to draw the ear superiorly, supporting the auricle's optimal positioning. This activity is fundamental to the function of the ear in capturing and conducting sound.

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