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Temporalis muscle
From Wikipedia, the free encyclopedia
| Temporalis muscle | ||
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| The Temporalis; the zygomatic arch and Masseter have been removed. | ||
| Latin | musculus temporalis | |
| Gray's | subject #109 386 | |
| Origin: | temporal lines on the parietal bone of the skull. | |
| Insertion: | coronoid process of the mandible. | |
| Artery: | deep temporal | |
| Nerve: | third branch (mandibular nerve) of the trigeminal nerve | |
| Action: | elevation and retraction of mandible | |
| Antagonist: | Platysma muscle | |
| Dorlands/Elsevier | m_22/12551069 | |
The temporalis muscle is one of the muscles of mastication.
Contents |
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.
The temporalis muscle is covered by the temporal fascia, also known as the temporal aponeurosis.
The muscle can be felt if one places their fingers on their temples (on the sides of their head, just behind the eyebrows), while clenching and unclenching their teeth.
As with the other muscles of mastication, control of the temporalis muscle comes from the third (mandibular) branch of the trigeminal nerve. Specifically, the temporalis is innervated by the deep temporal nerves.
Contraction of the temporalis muscle elevates the mandible. The somewhat horizontal fibers of the posterior part of the muscle retract the mandible.
 Muscles of head and neck |
 Frontal bone. Outer surface. |
 Sphenoid bone. Anterior and inferior surfaces. |
 Mandible. Outer surface. Side view. |
 Mandible. Inner surface. Side view. |
 Mandibular division of the trifacial nerve. |
- LUC temp
- SUNY Labs 27:04-0100 - "Infratemporal Fossa: The Temporalis Muscle"
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