Muscles of Facial Expression Flashcards
1
Q
Obicularis Oculi
A
action = eye closure innervation = Cranial Nerve VII (facial nerve)
2
Q
Obicularis Oris
A
action = mouth closure, lip protrusion, and pressing lips against teeth innervation = CN VII
3
Q
Zygomaticus major/minor
A
action = pulls corners of lips upward innervation = CN VII
4
Q
Risorius
A
action = pulls corners of mouth posteriorly (grin or grimace) innervation = CN VII
5
Q
Frontalis
A
action = raises eyebrows innervation = CN VII
6
Q
Buccinator
A
action = compresses cheeks innervation = CN VII
7
Q
Masseter
A
action = jaw closure innervation = trigeminal nerve (CN V, mandibular branch)
8
Q
Temporalis
A
action = elevates mandible, closes jaw innervation = trigeminal nerve (CN V, mandibular branch)
