Platysma
tenses skin of anterior neck
sternocleiodmastoid
head/neck flexion
rectus abdominis
flexion/compression of abdomen
external oblique
flexion/compression of abdomen
transverse abdominis
compression of abdomen
external intercostals
depresses ribs during expiration (forceful exhalation)
Diaphragm
expands chest during breathing
frontalis
raises eyebrows
procerus
depresses medial eyebrow
temporalis
elevates/closes mandible
occipitalis
tenses skin on scalp (or retracts scalp)
nasalis
opens nostrils
zygomaticus major
elevates corner of mouth
zygomaticus minor
elevation of mouth
orbicularis oculi
closes eyelid
orbicularis orsis
close and protrude lips (kiss)
masseter
elevates and close mouth (chew)
internal intercostals
depresses ribs during expiration (forceful exhalation)
internal oblique
flexion/compresses abdomen