| Temporal muscle | |
|---|---|
| The Temporalis; the zygomatic arch and Masseter have been removed. | |
| Latin | musculus temporalis |
| Origin | temporal lines on the parietal bone of the skull. |
| Insertion | coronoid process of the mandible. |
| Artery | deep temporal |
| Nerve | mandibular nerve (V3) |
| Actions | elevation and retraction of mandible |
| Antagonist | Platysma muscle |
The temporal 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 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.
As with the other muscles of mastication, control of the temporal muscle comes from the third (mandibular) branch of the trigeminal nerve. Specifically, the muscle is innervated by the deep temporal nerves.
The muscle receives its blood supply from the deep temporal arteries which anastomose with the middle temporal artery.
Contraction of the temporal muscle retrudes and elevates the mandible. The posterior horizontal fibers retract the mandible while the anterior vertical fibers elevate the mandible.
|
|||||||||||||||||||||||||||||||||