Muscles of Facial Expressions Flashcards
1
Q
Orbicularis Oculi
A
Action: Eye closure
Innervation: Facial Nerve (CN VII)
2
Q
Orbicularis Oris
A
Action: Mouth Closure, closes lips, protrudes lips forward, presses lips against teeth
Innervation: facial nerve (CN VII)
3
Q
Zygomaticus major/minor
A
Action: pulls corner of the mouth upward
Innervation: facial nerve (CN VII)
4
Q
Risorius
A
Action: pulls corners of the mouth posteriorly (grin or grimace)
Innervation: Facial Nerve (CN VII)
5
Q
Frontalis (occipitofrontalis)
A
Action: raise eyebrows
Innervation: facial nerve (CN VII)
6
Q
Buccinator
A
Action: compress cheeks
Innervation: facial nerve (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 bunch)
