Other Names
- Sterno-mastoid
- Neck (Front / Sides)
- Neck Flexors
Heads
- Anterior Fibers
- Posterior Fibers
Movement
Neck (Atlantooccipital & Atlantoaxial)
- Flexion [1]
- Both Sides
- Rotation [1, 2]
- Rotation right [Left Sternocleidomastoid]
- Rotation left [Right Sternocleidomastoid]
- Lateral Flexion [1, 2]
- Lateral flexion right [Right Sternocleidomastoid]
- Lateral flexion left [Left Sternocleidomastoid]
- Extension [2]
- Flexion [1, 2]
- Both Sides
- Rotation [1, 2]
- Rotation right [Left Sternocleidomastoid]
- Rotation left [Right Sternocleidomastoid]
- Lateral Flexion [1, 2]
- Lateral flexion right [Right Sternocleidomastoid]
- Lateral flexion left [Left Sternocleidomastoid]
Attachments
- Sternum [1]
- Manubrium
- Clavicle (Medial) [2]
- Skull [1, 2]
- Mastoid Process