musculus_sternocleidomastoideus
1. [ noun ] (anatomy,zoology) 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
Synonyms: sternocleido_mastoideus sternocleidomastoid_muscle sternocleidomastoid
Related terms: skeletal_muscle neck