1. Platysma
- Origin: Fascia over the deltoid and the pectoralis major muscles
- Insertion: Mandible; blends with the muscle around the angle of mouth and the skin of the lower face
- Action: Depresses the mandible; draws outer part of lower lip inferiorly and posteriorly as in pouting
2. Mentalis
- Origin: Mandible
- Insertion: Skin of chin
- Action: Draws the outer part of the lower lip and pulls the skin of the chin up
3. Orbicularis oris
- Origin: Muscle fibers surrounding opening of the mouth
- Insertion: Skin at the corner of the mouth
- Action: Closes at protrudes lips; compresses lips against the teeth; shapes the lips during speech
4. Corrugator supercilii
- Origin: Medial end of superciliary arch of frontal bone
- Insertion: Skin of the eyebrow
- Action: Draws eyebrows inferiorly and forehead wrinkles vertically
5. Orbicularis oculi
- Origin: Medial wall of orbit
- Insertion: Circular path around the orbit
- Action: Closes the eye
6. Occipitofrontalis (Frontal Belly)
- Origin: Epicranial aponeurosis
- Insertion: Skin superior to supraorbital margin
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Action: Draws scalp anteriorly; raises eyebrows; and wrinkles the skin of the forehead horizontally