Temporalis Muscle: Anatomy And Function

Temporalis Muscle: Anatomy And Function

Discuss the origin, insertion nerve supply and actions of temporalis muscle.
Answer.

Temporalis Muscle Origin

From the floor of temporal fossa and deep surface of temporal fascia.

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Temporalis Muscle Insertion

Into the coronoid process (tip, inner surface and anterior border) of the ramus of mandible.

Temporalis Muscle Nerve supply

Two deep temporal nerves from the anterior division of the mandibular nerve.

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Temporalis Muscle Actions

• Elevation of mandible
• Retraction of mandible
• Helps in side-to-side movement of the lower jaw during grinding