1.
Name: Platysma
Origin: Fascia covering the pectoralis major and deltoid muscles
Insertion: Mandible, blends with muscles around angle of mouth, and skin of lower face
Action: Depression of mandible and lower lip, tension of skin of neck
2.
Name: Mentalis
Origin: Mandible
Insertion: Skin of chin
Action: Elevation of the skin of the chin and raises, everts, and protrudes the lower lip
3.
Name: Orbicularis Oris
Origin: Muscle fibers surrounding opening of mouth
Insertion: Skin at corner of mouth
Action: Compresses and protrudes lips (aka kissing muscle)
4.
Name: Corrugator supercilii
Origin: Medial end of superciliary arch of frontal bone
Insertion: Skin above middle part of eyebrow
Action: Draws the eyebrow inferiorly and wrinkles the skin of forehead vertically
5.
Name: Oribicularis oculi
Origin: Medial wall of orbit
Insertion: Circular path around orbit
Action: Closes the eyes
6.
Name: Occipitofrontalis
Origin: Epicranial aponeurosis
Insertion: Skin superior to supraorbital margin
Action: Lifts the eyebrow and the upper eyelid, wrinkles the forehead skin horizontally, and draws scalp anteriorly