Muscles of Facial Expression

Epicranial Muscle Occipital Belly Origin & Insertion

- originates at the occipital and mastoid

- inserts into the epicranial aponeurosis

Epicranial Aponeurosis

an intermediate tendon between the frontal and occipital bellies of the epicranial muscle

Orbicularis Oculi Location

surrounds the eye

Orbicularis Oris Location

encircles the mouth

Buccinator Muscle Location

Forms the anterior portion of the cheek

Buccinator muscle insertion

angle of the mouth

Risorius Muscle origin

the superficial fascia of the masseter

Levator Labii Superioris Alaeque Nasi Origin

frontal process of maxilla

Zygomaticus Major Origin

zygomatic bone

Zygomaticus Major Action

elevates the angle of the upper lip and pulls is laterally (as in smiling)

Levator Anguli Oris Origin

canine fossa of the maxilla,

- deep to the zygomatic major and minor

Depressor Anguli Oris Origin

lower border of mandible

Depressor Labii Inferioris Origin

lower border of mandible

Mentalis Location

chin

Platysma origin

skin tissue of the clavicle and shoulder