Direction of fiber / muscle contraction: ( LEFT, RIGHT, UP, ORDOWN )
- Masseter & temporalis
- Lateral rectus (of the eye)
- Sternocleidomastoid
- Rectus abdominus
- Multifidi
- Trapezius
- External oblique & internal oblique (one on the right andone on the left)
- Pectoralis major
- Deltoid
- Latissimus dorsi