Temporalis origin and insertion

Temporalis runs from the temporal bone, parietal bone, frontal bone and sphenoid bone to the mandible.

What are the origin and insertion of temporalis?

Temporalis arises from the temporal fossa (temporal bone, parietal bone, frontal bone and greater wing of the sphenoid), and the deep surface of the temporal fascia. It inserts on the coronoid process of the mandible. Its main action is elevation of the mandible. It is supplied by the deep temporal nerves (V3), from the mandibular division of the trigeminal nerve. The attachments, actions and nerve follow Gray (1918).

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Every attachment and its bone

Origins 5

Origins of temporalis, with the bone each is on
Attachment	Bone
Temporal fossa, temporal bone	Temporal bone
Temporal fossa, parietal bone	Parietal bone
Temporal fossa, frontal bone	Frontal bone
Temporal fossa, greater wing of the sphenoid	Sphenoid bone
Deep surface of the temporal fascia	None The temporal fascia is not segmented in BodyParts3D.

Insertion 1

Insertion of temporalis, with the bone each is on
Attachment	Bone
Coronoid process of the mandible	Mandible

Actions

The actions of temporalis, and which are its main ones
Action	What moves	Main or assisting
Jaw elevation	The mouth closes	Main action
Retraction	The jaw slides back	Assists

Each action is stated in the anatomical position: standing, arms by the sides, palms forward.

Innervation

The deep temporal nerves (V3), from the mandibular division of the trigeminal nerve.

Sources

Gray (1918), Myology, the muscles of mastication

See it in 3D

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