Muscles of the head and anterior neck

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Last updated 1:39 AM on 4/15/26
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49 Terms

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frontalis

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what is the origin of the frontalis

galea aponeurotica

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what is the insertion of the frontalis

skin of the eybrows

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what is the action of the frontalis

rasies the eyebrows

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Orbicularis Oculi

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what is the origin of Orbicularis Oculi

frontal bone and maxillary bone

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insertion of Orbicularis Oculi

eyelid

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action of Orbicularis Oculi

closes eye and squinting

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Risorius

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insertion of risorius

corner of the mouth

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origin or risorius

fascia of the cheek

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action of the risorius

moves corner of the mouth laterally

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zygomaticus

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origin of zygomaticus

zygomatic bone

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insertion of the zygomaticus

corner of the mouth

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action of zygomaticus

elevates the corner of the mouth for smiling

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orbicularis oris

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origin of orbicularis oris

encircles mouth

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isertion of orbicularis oris

encricles mouth

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action of orbicularis oris

closes lips and protrudes lips

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platysma

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origin of platysma

fascia of chest

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insertion of platysma

lower margin of mandible

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action of platysma

tenses skin of neck

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what is a cutaneous muscle

a muscle that inserts on teh skin rather than a bone

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masseter

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origin of masseter

zygomatic arch

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insertion of masseter

ramus of mandible

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action of masseter

elevates mandible and closes jaw

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temporalis

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origin of temporalis

temporal and parietal bones

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insertion of temporalis

coronoid process of mandible

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action of temporalis

elevates mandible and closes jaw

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digastric

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digastic origin

mastoid process of temporal bone

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digastic insertion

mandiple via hyoid bone

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digastic action

depresses mandible, opens jaw, and elevates hyoid during swallowing

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mylohyoid

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mylohyoid origin

mandible

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mylohyoid insertion

hyoid bone, midline

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mylohyoid action

elevates floor of mouth

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sternohyoid

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sternohyoid origin

manubrium of the sternum

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sternohyoid insertion

hyoid bone

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sternohyoid action

depress hyoid

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sternocleidomastoid

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sternocleidomastoid origin

manubrium of sternum and clavicle

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sternocleidomastoid insertion

mastoid process of the temporal bone

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sternocleidomastoid action

flex and rotate neck