sternocleidomastoid

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ster·no·clei·do·mas·toid

 (stûr′nō-klī′də-măs′toid)
n.
Either of two muscles of the neck that serve to flex the neck and rotate the head.

[stern(um) + Greek kleis, kleid-, collarbone + mastoid.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sternocleidomastoid - one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head
skeletal muscle, striated muscle - a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes
cervix, neck - the part of an organism (human or animal) that connects the head to the rest of the body; "he admired her long graceful neck"; "the horse won by a neck"
References in periodicals archive ?
The posterolateral boundaries of Sibson fascia are the vertebral column, first rib, levator scapulae muscle, and scalenus medius muscle; the medial boundary is formed by the superior mediastinal structures; and the anterior boundary is formed by the scalenus anterior and sternocleidomastoid muscles.
Cervical Dystonia : Patients with smaller neck muscle mass and patients who require bilateral injections into the sternocleidomastoid muscles are at greater risk of dysphagia.
Asymmetric uptake in the sternocleidomastoid muscles, longus capitis, and longus colli is not uncommon.

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