Muscles of Mastication Flashcards
1
Q
Masseter
A
Origin: Zygomatic arch
Insertion: Outer surface of ramus of mandible
Action: Elevates and protrudes mandible
Innervation: Trigeminal N.
2
Q
Temporalis
A
Origin: Fan-shaped area on side of skull
Insertion: Coronoid process of mandible
Action: Elevates and retracts mandible
Innervation: Trigeminal N.
3
Q
Medial pterygoid
A
Origin: Medial surface of lateral pterygoid plate
Insertion: Ramius of mandible near angle
Action: Elevates and laterally displaces mandible
Innervation: Trigeminal N.
4
Q
Lateral pterygoid
A
Origin: Lateral surface of lateral pterygoid plate
Insertion: Neck of mandible near articulation
Action: Protrudes mandible
Innervation: Trigeminal N.
