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Muscles - Head
Muscles of the Head
Term | Definition |
---|---|
frontalis | origin: epicranial aponeurosis |
frontalis | insertion: skin of eyebrows, bridge of nose |
frontalis | "forehead" muscle |
frontalis | action: raises eyebrows, wrinkles forehead |
occipitalis | origin: occipital bone |
occipitalis | insertion: epicranial aponeurosis |
occipitalis | base of neck |
occipitalis | action: tenses and retracts scalp |
orbicularis oculi | origin: medial margin of orbit |
orbicularis oculi | insertion: skin around eyelids |
orbicularis oculi | circles your eye and eye socket |
orbicularis oculi | action: closes eye |
zygomaticus | origin: zygomatic bone |
zygomaticus | insertion: angle of mouth; upper lip |
zygomaticus | near corner of lips |
zygomaticus | action: draws corner of mouth back and up |
orbicularis oris | origin: maxillary bone and mandible |
orbicularis oris | insertion: lips |
orbicularis oris | circles lips |
orbicularis oris | compresses, purses lips |
buccinator | origin: maxillary bone and mandible |
buccinator | insertion: blends into fibers of orbicularis oris |
buccinator | cheek muscle |
buccinator | action: compresses cheeks |
platysma | origin: from cartilage of second rib to acromion of scapula |
platysma | insertion: mandible and skin of cheek |
platysma | broad sheet of muscle rising from chest and shoulder and runs up the neck |
platysma | action: tenses skin of neck, depresses mandible |
masseter | origin: zygomatic arch |
masseter | insertion: lateral surface of mandible |
masseter | near angle of jaw |
masseter | action: elevates mandible |
temporalis | origin: along temporal lines of skull |
temporalis | insertion: coronoid process of mandible |
temporalis | side of skull |
temporalis | action: elevates mandible |