Gal Alexander Nikic

The sternocleidomastoid muscle is a large, superficial muscle on each side of the neck. It runs diagonally from the sternum and clavicle to the mastoid process behind the ear.

FUNCTION:

Unilateral: - Rotates the head to the opposite side
Right SCM → turns face left
Left SCM → turns face right
- Laterally flexes the neck to the same side

Bilateral: - Produces neck flexion
- An accessory muscle of inspiration