Sternocleidomastoid O & I
O: Mastoid process of the temporal boneI: Sternal head to the anterior manubriumI: Clavicular head to the superior medial clavicle
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Sternocleidomastoid O & I
O: Mastoid process of the temporal boneI: Sternal head to the anterior manubriumI: Clavicular head to the superior medial clavicle