Sternum Muscle

February 17th, 2010 by admin

The sternocleidomastoid muscle (m.sternocleidomastoideus)lies immediately under the platysma and is separated from it by the cervical fascia. It originates from the sternal manubrium and the sternal end of the clavicle. Both heads fuse proximally and the muscle is attached to the mastoid process and linea nuchae superior of the occipital bone. This muscle originated as part of the trapezius muscle and it therefore has innervation in common with the trapezius (n.accesrius and C2).Action in unilateral contraction the muscle flexes the cervical segment of the spineto the same side; the head Medical Coding Services will understand all these for the proper collections.

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