muscles of facial expressions Flashcards
frontal belly of occipitofrontalis
(epicranius)
action: elevates eyebrows; wrinkles skin on forehead
o: epicranial aponeurosis
i: Skin of eyebrows
Occipital Belly of occipitofrontalis (epicranius)
action: retracts scalp
o: Occipital bone
i: epicranial aponeurosis
Nasalis
A: Flares nostrils
O: Maxillae
I: Skin of Nose
Procerus
A: Wrinkles Nose
O: Nasal Bone
I: Skin of Nose
Corrugator Supercillii
A: Pulls eyebrows inferiorly and medially; vertical wrinkles above nose
O: Superciliary Arch
I: Skin of Superciliary Arch
Levator palpebrae superioris
Elevates Superior eye lid (Opens Eye)
O: Sphenoid bone
I: Skin of superior Eyelid
Orbicularis Oculi
A: Closes eye; blink muscle
O: Margin of Orbit
I: Skin surrounding eyelids
Buccinator
A: Compresses cheek; holds food between teeth while chewing
O: Mandible and Maxillae
I: Orbicularis Oris
Depressor Anguli Oris
Action: Depresses corner of mouth inferiorly+Laterally; Frown
O: Mandible
I: Corner of Mouth
Depressor Labii Inferioris
A: Draws lower lip inferiorly
O: mandible
I: inferior lip
Levator Anguli Oris
A: Pulls corner of mouth superiorly and laterally; Smile
O: Maxilla
I: Corner of mouth
Levator Labii Superioris
Action: Opens lips; raises and furrows upper lip; Elvis Snarl
O: Zygomatic Bone; Maxilla
I: Superior Lip
Mentalis
A: Protrudes lower lip; wrinkles chin; Pout
O: Mandible
I: Skin of chin
Orbicularis Oris
A: Compresses and purses lips; Kiss
O: Maxilla and Mandible
I: Skin encircling mouth
Risorius
A:Draws corner of lip laterally; tenses lips
O: Masseter Muscle
I: Corner of mouth
