Muscle
Temporalis
Elevates and retracts the jaw
High-yield
Posterior fibres retract the mandible (unique among elevators). CN V3.
Overview
A broad fan-shaped muscle of the temporal fossa that elevates the mandible; its posterior fibres retract the jaw.
Reference facts
- Origin
- Temporal fossa and temporal fascia
- Insertion
- Coronoid process and anterior ramus of the mandible
- Action
- Elevates the mandible (closes the jaw); posterior fibres retract the mandible
- Innervation
- Deep temporal nerves from the mandibular division (CN V3)
- Blood supply
- Deep temporal arteries (from the maxillary artery)
Frequently asked questions
What does the temporalis do?
The temporalis elevates the mandible (closes the jaw); posterior fibres retract the mandible.
What nerve innervates the temporalis?
The temporalis is innervated by the deep temporal nerves from the mandibular division (CN V3).
Where does the temporalis attach?
The temporalis originates from the temporal fossa and temporal fascia and inserts on the coronoid process and anterior ramus of the mandible.
What is the blood supply of the temporalis?
The temporalis is supplied by the deep temporal arteries (from the maxillary artery).