Sternocleidomastoid Muscle

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Other Names:
- Sterno-mastoid
- Neck (Front / Sides)
- Neck Flexors
- Latin: musculus sternocleidomastoideus

Movement:
- Neck (Atlantooccipital & Atlantoaxial):
    Flexion: Both Sides
    Rotation:
        Rotation right [Left Sternocleidomastoid]
        Rotation left [Right Sternocleidomastoid]
    Lateral Flexion:
        Lateral flexion right [Right Sternocleidomastoid]
        Lateral flexion left [Left Sternocleidomastoid]
    Extension
- Spine (Cervical):
    Flexion: Both Sides
    Rotation:
        Rotation right [Left Sternocleidomastoid]
        Rotation left [Right Sternocleidomastoid]
    Lateral Flexion:
        Lateral flexion right [Right Sternocleidomastoid]
        Lateral flexion left [Left Sternocleidomastoid]

Attachments:
- Origin:
    Sternum (Manubrium)
    Clavicle (Medial)
- Insertion:
    Skull: Mastoid Process

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