T2Q4 Mastication, Muscles Flashcards
1
Q
innervation: muscles of mastication
A
Mandibular V3
2
Q
masseter: action!
A
elevation
3
Q
medial pterygoid: action!
A
- protrusion
2. elevation
4
Q
lateral pterygoid: action!
A
- side-to-side grinding
2. elevation
5
Q
temporalis: action!
A
retraction
6
Q
temporalis: origin/ insertion
A
origin: temporal fossa
insertion: coronoid process of mandible
7
Q
masseter: origin/ insertion
A
o: zygomatic arch
i: ramus, lateral surface
8
Q
medial pterygoid
A
o: lateral pterygoid plate
i: ramus, medial aspect
9
Q
lateral pterygoid
A
o: lateral pterygoid plate
i: TMJ capsule
10
Q
wh 2 muscles originate at lateral pterygoid plate?
A
medial and lateral pterygoid
11
Q
what two muscles insert on opposite surfaces of the ramus of the mandible?
A
the masseter and medial pterygoid
