muscles of face and anterior neck

(H) frontalis origin

galea aponeurotica

(H) frontalis insertion

skin of eyebrows

(H) frontalis action

raises eyebrows

(H) orbicularis oculi origin

frontal bone and maxillary bone

(H) orbicularis oculi insertion

eyelid

(H) orbicularis oculi action

closes eye; squinting

(H) risorius origin

fascia of the cheek

(H) risorius insertion

corner of the mouth

(H) risorius action

moves the corner of the mouth laterally

(H) zygomaticus major origin

zygomatic bone

(H) zygomaticus major insertion

corner of mouth

(H) zygomaticus major action

elevates corner of mouth (smiling)

(H) orbicularis oris origin/insertion

encircles mouth

(H) orbicularis oris action

closes lips; protrudes lip

(H,C) masseter origin

zygomatic arch

(H,C) masseter insertion

ramus of mandible

(H,C) masseter action

elevates mandible

(H) temporalis origin

temporal and parietal bones

(H) temporalis insertion

coronoid process of mandible

(H) temporalis action

elevates mandible

(H) platysma origin

fascia of chest

(H) platysma insertion

lower margin of mandible

(H) platysma action

tenses skin of neck

(H,C) digastric origin

mastoid process of temporal bone

(H,C) digastric insertion

mandible

(H,C) digastric action

depresses mandible; elevates hyoid

(H,C) mylohyoid origin

mandible

(H,C) mylohyoid insertion

hyoid bone; midline

(H,C) mylohyoid action

elevates floor of mouth

(H,C) sternohyoid origin

manubrium of the sternum

(H,C) sternohyoid insertion

hyoid bone

(H,C) sternohyoid action

depress hyoid

(H,C) sternocleidomastoid origin

manubrium of sternum; clavicle

(H,C) sternocleidomastoid insertion

mastoid process of temporal bone

(H,C) sternocleidomastoid action

flex neck; rotate neck