Masseter

The muscle highlighted is the masseter.

This muscle is one of the muscles of mastication. The muscles of mastication include:

• Masseter
• Temporalis
• Medial pterygoid
• Lateral pterygoid

The masseter is rectangular in shape and consists of a superficial part and a deep part.

Origin: zygomatic arch and maxillary process of the zygomatic bone

Insertion: lateral surface of ramus of mandible

Innervation: masseteric nerve – a branch of the mandibular nerve (V3)

Blood supply: masseteric artery

To learn more about the muscles of mastication, check out this tutorial!