Muscles of Facial Expression

O = Origin, I = Insertion , A = Action

Orbicularis Oculi

O: Maxilla,Frontal

Orbicularis Oculi

I: Tissue of the upper and lower eyelids

Orbicularis Oculi

A: Closes eyelids (winking/blinking/squinting)

Orbicularis Oris

O: Lips (upper and lower)

Orbicularis Oculi

I: Lips (upper and lower) at angle (corner) of mouth

Orbicularis Oculi

A: Closes and protracts lips (speech/food manipulation/kissing/whistling)

Buccinator

O: Maxilla, Mandible

Buccinator

I: Orbicular Oris

Buccinator

A: Compresses cheeks (blowing, sucking and eating)

Frontalis (frontal belly of epicranius)

O: Epicranial Aponeurosis

Frontalis (frontal belly of epicranius)

I: Skin of eyebrows, Root of the nose

Frontalis (frontal belly of epicranius)

A: Elevates eyebrows and wrinkles forehead skin horizontally

Occipitalis (occipital belly of epicranius)

O: Occipital, Temporal

Occipitalis (occipital belly of epicranius) ‘

I: Epicranial Aponeurosis

Occipitalis (occipital belly of epicranius)

A: Acts with Frontalis to draw scalp posteriorly (surprise)

Platysma

O: Upper Fascia of Thorax

Platysma

I: Mandible, Corner of mouth

Platysma

A: Tenses skin of neck; depresses mandible and pulls down lower lip and corners of the mouth

Levator Palpebrae Superioris

O: Sphenoid

Levator Palpebrae Superioris

I: Superior Tarsal Plate, Upper eyelid

Levator Palpebrae Superioris

A: Elevates upper eyelid (opens eyes)

Mentalis

A: Protracts lower lip (pouting, doubt)

Risorius

A: Draws/retracts angle of mouth laterally (laugh, grin, tenseness, grimace)

Zygomatic Major

A: Elevates angle of mouth (smiling, laughing)

Levator Labii Superioris

A: Elevates upper lip

Depressor Labii Inferioris

A: Depresses lower lip (pout)

Corrugator Supercilii

A: Draws eyebrows medially and inferiorly (produces vertical wrinkling of forehead)

Depressor Anguli Oris

A: Depresses Corners of Mouth (as in sadness, frowning)