facial muscles and function

frontalis

raises eyebrows

orbicularis oculi

blinks and closes eyes

orbicularis oris

closes and protrudes/puckers lips (kissing

)

zygomaticus minor

elevates upper lip

zygomaticus major

raises corners of mouth (smile)

buccinator

compresses cheek to pass air (whistling)

masseter

closes jaw to allow for chewing

occipitalis

pulls scalp posteriorly

temporalis

closes jaw (chewing)

depressor anguioris

pulls down on corners of mouth (frown)

sternocleidomastoid

flexes neck; rotates head

platysma

pulls corners of mouth inferiorly and widens mouth (fear or sadness)

nasalis

widens nostrils

risorius

draws corner of mouth laterally when expressing horror

levator labii superioris

opens lips; raises and furrows the upper lip

mentalis

raises and protrudes lower lip (drinking, expression of doubt); wrinkles skin of chin

corrugator supercilii

draws eyebrows medially and inferiorly (frown/concentration)

lateral pterygoids

opens jaw

medial pterygoids

elevates mandible