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Occipitofrontalis
O/I = aponeurosis
A = wrinkles forehead, raises eyebrows
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Levator labii superioris
O = lower margin of orbit above infraorbital foramen
I = skin and muscle of upper lip
A = raises upper lip an in snarl, flares nostrils
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Levator palpebrai superioris
O = lesser wing of spenoid
I = connective tissue of upper eyelid
A = raises upper eyelid
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Obicularis oculi
O = medial margin of orbit
I = skin around eyelid
A = closes eyelids
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Zygomaticus major
O = zygomatic bone
I = orbicularis ors muscle at corner of mouth
A = draws corners of mouth up
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Orbicularis oris
O = mandible and maxilla
I = soft tissues at corner of mouth
A = closes lips
-
Buccinator
O = alveolar process
I = orbicularis oris
A = compresses cheek
-
Platysma
O = upper thorax btwn cartilage of second rib and acromion
I = mandible and muscles around mouth, chin, and jaw
A = tenses skin of neck
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Temporalis
O = temporal lines of parietal bone
I - coronoid process of mandible
A = raises mandible, chewing
-
Masseter
O = zygomatic arch
i = angle and ramus of mandible
A = raises mandible
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Sternocleidomastoid
O = manubrium, and clavicle
I = mastoid process temp bone
A = flex neck.rotates and bends head laterally
-
Sternohyoid
o = clavicle and manubrium
i = hyoid bone
a = depresses hyoid bone and larynx
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