Head & Facial Muscles
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44 Terms
Frontalis
L: forehead (part of occipitofrontalis m.)
O: epicranial aponeurosis
Ins: skin
skin of eyebrow & forehead
blends w/ orbicularis oculi m.
Inn: Facial nerve (CN7)
A:
elevates eyebrows
creases skin of forehead
moves scalp forward (works w/ occipitalis m.)
Orbicularis oculi
L: around the eyes
O:
frontal bone
maxila
Ins:
lateral side of orbit
Inn: Facial nerve (CN7)
A: closes eyelids
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List the muscles that produce facial expressions and briefly describe their function.
Frontalis
draws scalp anteriorly
raises eyebrows
wrinkles skin of forehead horizontally
Occipitalis
draws scalp posteriorly
Orbicularis oris
closes & protrudes lips (kissing)
Zygomaticus major
draws angle of mouth superiorly & laterally (smiling)
Buccinator
presses cheek against teeth & lips (whistling, blowing, sucking)
Platysma
draws lower lip inferiorly & posteriorly (pouting)
depresses mandible
Orbicularis oculi
closes eye
Corrugator supercilli
draws eyebrow inferiorly & wrinkles skin of forehead vertically
The occipitofrontalis is also known as the ________ muscle.
The occipitofrontalis is also known as the epicranius muscle.
The occipitalis m. is the anterior head/part of the occipitofrontalis muscle.