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)