Muscles of Mastication Flashcards
0
Q
masseter
A
O: inf border of med surface of maxillary process
I: angle and lat surface of ramus of mandible
N: CN V
A: elevates mandible
1
Q
temporalis
A
O: floor of temporal fossa, deep surface of temporalis fascia
I: tip and med surface of coronoid process
ant ramus of mandible
N: CN V
A: elevates mandible to close jaw
post and horiz fibers retract mandible
2
Q
lat pterygoid
A
O: infratemporal surface of crest of great wing of sphenoid
lat surface of lat pterygoid plate
I: joint capsule and art disc of TMJ
inf head– pterygoid fovea
N: CN V
A: protracts mandible and depresses chin
UL– swings jaw toward contralateral side
