1.
Muscle name: Platysma
Origin: Fascia over deltoid and pectoralis major muscles
Insertion: Mandible
Action: Depresses mandible; draws
2.
Muscle name: Depressor labii inferioris
Origin: Mandible
Insertion: Skin of lower lip
Action: Depresses or lower the lower lip
3.
Muscle name: Orbicularis oris
Origin: Muscle fibers surrounding opening of mouth
Insertion: Skin at the corner of mouth
Action: Closes and protrudes lips, as in kissing :>
4.
Muscle name: Corrugator supercilii
Origin: Medial end of the superciliary arch of frontal bone
Insertion: Skin of eyebrow
Action: Draws eyebrow inferiorly and wrinkles the skin of the forehead vertically
5.
Muscle name: Orbicularis oculi
Origin: Medial wall of orbit
Insertion: Circular path around orbit
Action: Closes eyes
6.
Muscle name: Occipitofrontalis
Origin: Epicranial aponeurosis
Insertion: skin superior to supraorbital margin
Action: Raises eyebrows and wrinkles skin of forehead horizontally