Facial Muscle O.I.N.A.'s-Exam II Flashcards
Orbicularis Oris
ORIGIN:Extinsic Fibers:CircumOral Muscles Intrinsic: Incisive Fossa of mandible and maxilla INSERTION: extrin:in lips as sphincter Intrinsic: skin of lip NERVE: VII Z,B,M ACTION: Press lips against teeth, close mouth, protrude lips
Depressor Anguli Oris
O: Oblique Line of Mandible I:Angle of Mouth N: VII B,M A:Depresses Angle of Mouth SUCH A WEIRD NAME FOR THIS MUSCLE!
Levator Anguli Oris
O: Canine Fossa of Max I:Angle of Mouth N: VII Z,B A: Elevates the Angle of the mouth WEIRD NAME, I KNOW!
Zygomaticus Major
O: Zygomatic I:Angle of Mouth N: VII Z,B A:Angle of mouth up and back (TOWARDS ZYGOMATIC BONE?), Crazy.
Risorius
O: Platysma, Parotid/Masseter region I:Angle of Mouth N:VII Z,B A:Draws angle of mouth laterally REMEMBER THE JOKER? Thanks Dr. Crutchfield
Levator Labii Superioris
O: Above Teeth/Zygomatic I:Upper Lip N: VII Z,B A:Elevates Upper Lip, Flares Nostrils WEIRD NAME, I KNOW
Depressor Labii Inferioris
O: (EXTERNAL) Oblique Line of Mandible :) I:Lower Lip N: VII M A: Depresses Lower Lip (CRAZY NAME)
Buccinator
O: Alveolar Processes of Man and Max I:CRISS CROSS(upper fibers insert into lower lip, ect.) N: VII B A: Sucking and Blowing, Compress cheeks against molars
Mentalis
O: Incisive Mandibular Fossa I:Skin of Chin N: VII M A: Puckers skin of chin, Protrudes lower Lip
Nasalis
O: Canine Notch/Nasal Notch Maxilla I:Over Nose N: VII Z,B A: Compresses Nasal (YOU CAN DO THIS??) Flairs Nostril LIKE Levator Labii Superioris!!
Orbicularis Oculi
O:All round Eye I:Lids N: VII: T,Z Action: Closes eye
Procerus
O: Nasal Bone I: Glabella N: VII T,Z A: Wrinkle Bridge of Nose
OccipitoFrontalis
O: Aponeurosis in front, Superior Nuchal Line in Back I:Skin of Occipital N: VII T, Post.Auricular
Auricluaris Ant. Post. Sup.
O: Aponeurosis I:Around the ear N: VII T, P.A. Action: Pulls Ear forward, backward, superior
