Major Muscles of Mastication Flashcards
Need to know origin, insertion, and action
1
Q
Masseter
A
O: zygomatic process I: angle of mandible A: elevates mandible
2
Q
What is true of all of the major muscles of mastication for muscle action EXCEPT the lateral pterygoid? & What does the lateral pterygoid do?
A
They all elevate the mandible; the lateral pterygoid protrudes and lateral excursion
3
Q
Temporalis
A
O: inferior ridge of temporal bone I: coronoid process of mandible A: elevates mandible
4
Q
Medial pterygoid
A
O: medial surface of lateral pterygoid plate I: lingual surface A: elevate mandible
5
Q
Lateral pterygoid
A
O: lateral pterygoid plate on lateral surface I: neck of condyle on anterior aspect A: protrusion of mandible and lateral excursion
