L3Ob3-Head/Neck Muscle origin, insertion, and action

Created by patton283 

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frontalis (epicranius) action

raises the eyebrows; wrinkles the skin of the forehead

frontalis (epicranius) origin

occipital bone by way of galea aponeurosis

frontalis (epicranius) insertion

skin and muscles around the eye

orbicularis oculi action

closes the eye

orbicularis oculi origin

frontal and maxillary bones, margin of orbit

orbicularis oculi insertion

skin around the eye; circles the orbit

zygomaticus major action

raises the angle of the mouth (smile)

zygomaticus major origin

zygomatic bone

zygomaticus major insertion

skin and muscles about the angle of the mouth

orbicularis oris action

closes and protrudes the lips (kissing action)

orbicularis oris origin

maxilla and mandible

orbicularis oris insertion

skin surrounding the mouth, lips

buccinator action

compresses cheek; pulls corner of the mouth laterally

buccinator origin

mandible and maxillary bone

buccinator insertion

orbicularis oris and skin at the angle of the mouth

masseter action

raises the mandible, closing the jaw

masseter origin

zygomatic arch, maxilla

masseter insertion

mandible

temporalis action

raises the mandible, closing the jaw

temporalis origin

temporal bone

temporalis insertion

coronoid process of mandible

platysma action

depresses the mandible; draws the angle of the mouth downward; tightens skin of neck

platysma origin

fascia of upper chest

platysma insertion

mandible and skin of chin and cheek

sternocleidomastoid action

pulls head to one side, pulls head toward chest, or raises sternum

sternocleidomastoid origin

sternum and clavicle

sternocleidomastoid insertion

mastoid process of temporal bone

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