Muscles of Facial Expression Flashcards
Occipitalis
L: base of skull
A: draws scalp backward
Frontalis
L: forehead
A: elevates the eyebrows, wrinkles forehead
Orbicularis Oculi
L: encircles eye
A: closes eye
Levator Palpebrae Superioris
I: cranial nerve 3
L: upper eyelid
A: elevates upper eyelid
Corrugator Supercili
L: eyebrow
A: draws eyebrow downward and medially as in frowning
Procerus
L: root of nose
A: draws skin of forehead down
Nasalis
L: nose and nasolabial groove
A: draws wings of nose laterally and superiorly, constricts nostrils
Orbicularis Oris
L: encircles mouth
A: closes, protrudes, and shapes lips as in kissing and speaking
Levator Labii Superioris
L: upper lip
A: raises upper lip
Zygomaticus Major and Minor
L: infraorbital region
A: raises corner of mouth and draws it laterally as in smiling and laughing
Risorius
L: corner of mouth
A: draws corner of mouth laterally
Levator Anguli Oris
L: superior corner of mouth
A: draws corner of mouth upward
Depressor Anguli Oris
L: inferior to corner of mouth
A: draws corner of mouth downward
Depressor Labii Inferioris
L: lower lip
A: draws lower lip downward
Mentalis
L: chin
A: pushes lower lip outward as in pouting
