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11 Cards in this Set
- Front
- Back
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Epicranius (Frontalis) |
Raise eyebrows |
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Orbicularis oculi |
Close eyelids: blinking and squinting |
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Orbicularis oris |
Close lips and protrudes them: kissing and whistling |
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Buccinator |
Compress cheeks (whistling or sucking) |
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Zygomaticus major |
Raise corners of the mouth (smiling) |
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Temporalis |
Close jaw and retract (pull back) mandible |
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Platysma |
Tense skin of neck; depresses mandible; pulls lower lip back and down ORIGIN: Fascia of chest INSERTION: Mandible & skin/muscle of mouth |
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Masseter |
Prime mover of jaw closure (open and closes mouth) ORIGIN: Zygomatic bone and maxilla INSERTION: Mandible |
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Splenius capitus |
Extend or hyperextend head when both retract; if one contracts, the head is rotated and bent toward the active side |
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Sternocleidomastoid |
Flexes neck forward when both right and left sides contract; Contraction of one side rotates face forward opposite to shoulder ORIGIN: Sternum & clavicle INSERTION: Temporal & occipital bones |
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Trapezius (see muscles of chest for other actions) |
Extend head/neck ORIGIN: Occipital bone, cervical & thoracic vertebrae INSERTION: Scapula & clavicle |
