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Definition of Sternocleidomastoid muscle
1. Noun. 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.
Exact synonyms: Musculus Sternocleidomastoideus, Sternocleido Mastoideus, Sternocleidomastoid
Generic synonyms: Skeletal Muscle, Striated Muscle
Group relationships: Cervix, Neck
Generic synonyms: Skeletal Muscle, Striated Muscle
Group relationships: Cervix, Neck
Definition of Sternocleidomastoid muscle
1. Noun. (anatomy) A paired muscle in the superficial layers of the anterior portion of the neck, acting to flex and rotate the head. ¹
¹ Source: wiktionary.com