NCIt related terms : SCM; Structure of sternocleidomastoid muscle (body structure);
NCIt definition : A superficial neck muscle and a key anatomical landmark, which divides the neck into
anterior and lateral regions. It originates on the manubrium and the clavicle, and
inserts onto the mastoid process and the superior nuchal line. It functions to flex
the neck, move the chin cranially, and assists in elevating the rib cage during inspiration.;
Alternative definition : CDISC: A muscle of the neck; in general extending from the manubrium and the clavicle
to the mastoid process and the superior nuchal line. Primary function is to flex the
neck, move the chin cranially, and assist in elevating the rib cage during inspiration.;