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Muscles of Face
Movement and Location
15
Anatomy
02/17/2010
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Term
Risorius
 Definition
L: corner of mouth
A: draws corner of mouth laterally
Term
Nasalis
 Definition
L: nose and nasolabial groove
A: draws wings of the nose laterally and superiorly, constricts nostrils (sniffs)
Term
Corrugator Supercilii
 Definition
L: eyebrow
A: draws eyebrows down and medially (angry eyebrows)
Term
Occipitalisfontalis
 Definition
L: base of skull/forehead
A: draws scalp backwards/elevates eyebrows, wrinkles forehead
Term
Orbicularis Oculi
Definition
L: encircles eye
A: closes eye
Term
Mentalis
 Definition
L: Chin
A: pushes lower lip out as in pouting

Term
Zygomaticus Major and Minor
Definition
L: infraorbital region
A: raises corner of mouth and draws it laterally as in smiling or laughing.
Term
Procerus
Definition
L: root of nose
A: draws skin of the forehead down
Term
Levator Anguli Oris
 Definition
L: superior to corner of mouth
A: draws corner of mouth upward
Term
Masseter
 Definition
O: maxilla and zygomatic arch
I: angle and ramus of mandible
N: trigeminal nerve
A: elevates and protracts mandible, assists in lateral movement of mandible
Term
Buccinator
 Definition
L: cheek
A: pulls lips and cheeks against teeth
(fish face)
Term
Orbicularis Oris
 Definition
L: Encircles mouth
A: closes, protrudes and shapes lips as in kissing or speaking

Term
Platysma
 Definition
L: neck
A: tenses skin of the neck during shaving
Term
Sternocleidomastoid (SCM)
 Definition
L: Manubrium and clavicle
A: Prime mover for head flexion
Term
Trapezius
 Definition
L: extends from the occipital bone to the lower thoracic vertebrae and to the spine of the scapula (shoulder blade)
A: move the scapulae and support the arm