mastication Flashcards
1
Q
muscles of mastication and their action
A
- temporalis: ant fibers = elevation, post fibers = retract
- masseter: elevate
- lateral pterygoid: depress and protract
- medial pterygoid: elevate
2
Q
what are the accessory muscles to mastication?
what are they innervated by?
what is their action
A
- mylohyoid and ant digastric
- inferior alveolar
- open mouth wider
3
Q
ligaments of TMJ
A
- lateral temperomandibular
- stylomandibular
- shpenomandibular
4
Q
what nerve gives sensory posterior 1/3 of tongue
A
glossopharyngeal (CN IX)
5
Q
what nerve gives motor innveration to tongue?
what muscles?
A
- hypoglossal (CN XII)
- genioglossus
6
Q
what happens when there is a lesion on CN XII?
A
tongue deviates to side w/ lesion
