Muscle Movement Flashcards
Orbicularis oculi
Wink, squint, blink
Trapezius
Stabilizes, raises, retracts and rotates scapula
Levator labii superioris
Opens lips, raises and furrows upper lip
Sternocleidomastoid
Prime mover of active head and neck flexion
Zygomaticus
Raises lateral corners of mouth upward (smiling muscle)
Buccinator
Draws corner of mouth laterally, compresses cheek, holds food between the teeth during chewing, whistle
Risorius
Draws corner of mouth laterally, tenses lips
Orbicularis oris
Closes lips, purses and protrudes lips, kissing/whistling
Masseter
Prime mover of jaw, chewing
Platysma
Helps depress mandible, pulls lower lip back and down, tenses skin of neck, downward sag of mouth
Frontal belly (frontialis)
Raises the eyebrows, wrinkles forehead skin horizontally
Occipital belly (ocipitialis)
Pulls scalp posteriorly
Temporalis
Closes jaw, elevates and retracts mandible, maintains position of mandible at rest