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Temporal muscle
The temporal muscle, also known as the temporalis, is one of the muscles of mastication. It is a broad, fan-shaped muscle on each side of the head that fills the temporal fossa, superior to the zygomatic arch so it covers much of the temporal bone.〔Illustrated Anatomy of the Head and Neck, Fehrenbach and Herring, Elsevier, 2012, page 98〕
==Structure==
In humans, it arises from the temporal fossa and the deep part of temporal fascia. It passes medial to the zygomatic arch and inserts onto the coronoid process of the mandible, with its insertion extending into the retromolar fossa posterior to the most distal mandibular molar.〔Human Anatomy, Jacobs, Elsevier, 2008, page 194〕 In other mammals, the muscle usually spans the dorsal part of the skull all the way up to the medial line. There, it may be attached to a sagittal crest, as can be seen in early hominins like Paranthropus aethiopicus.
The temporal muscle is covered by the temporal fascia, also known as the temporal aponeurosis.
The muscle is accessible on the temples, and can be seen and felt contracting while the jaw is clenching and unclenching.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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