major functional muscles of the face and scalp Flashcards
ocibitofrontalis (frontalis) innervation
facial nerve
occibitofrontalis (frontalis) location
forehead near eyebrows
the facial nerve leaves which foreamen
the stylomastoid foramen
the action of the ocibitofrontalis (frontalis)
elevates eyebrows and wrinkles skin of forehead
protracts scalp indicating surprise or curiosity
orbicularis oculi (orbital sphincter) location
around the eye
action of the orbicularis oculi
closes eyelids, palebral part does so gently, orbital part tightly (winking)
orbicularis oris (oral sphincter) location
around the mouth
action of orbicularis oris
tonus closes mouth
phasic contraction compresses mouth and protrudes lips (kissing) or resists distention (blowing)
buccinator aka
cheek muscle
buccinator location
run horizontally along the line of the mouth in the cheeks
action of the buccinator
presses cheek against molar teeth
works with tongue to keep food between occlusal surfaces and out of the oral vestubule, resists distention when blowing