Origin, Insertion, and Action of the Skull Muscles

Molar regions of maxilla and mandible

Molar regions of maxilla and mandible

Origin of Buccinator

Mental tubercle and oblique line of each manible

Origin of Depressor anguli oris

Epicranial aponeurosis

Origin of Frontalis

Zygomatic arch

Origin of Masseter

Orbital portion of the frontal bone and the maxilla

Origin of Orbicularis oculi

Maxilla and mandible

Origin of Orbicularis oris

Connective tissue anterior to the ear

Origin of Risorius

Orbicularis oris muscle and connective tissue of the cheek and lips

Insertion of Buccinator

Muscle fibers and connective tissues of the corners of the mouth

Insertion of Depressor anguli oris

Skin of eyebrows

Insertion of Frontalis

Angle and lateral surface of the mandibular ramus

Insertion of Masseter

Skin of the orbital area

Insertion of Orbicularis oculi

Skin and connective tissue of the lips

Insertion of Orbicularis oris

Modiolus

Insertion of Risorius

Pulls cheeks in

Action of Buccinator

Pulls corners of mouth downward

Action of Depressor anguli oris

Elevates eyebrows and wrinkles skin of forehead

Action of Frontalis

Elevate mandible

Action of Masseter

Close eye

Action of Orbicularis oculi

Closes and protrudes lips

Action of Orbicularis oris

Pulls angles of mouth superiorly and laterally

Action of Risorius