Where is the sternocleidmastoid located?

Answer 1

The sternocleidomastoid has three attachment points which incidentally is contained within its name. The three attachment points are, the sternum, the medial head of the clavicle (collarbone), and the mastoid process of the skull located just behind and below your ear. So essentially, the sternocleidomastoid runs from below and behind your ear to your breastbone.

Answer 2

Origin - Anterior surface of the upper sternum Inner part of the clavicle.Insertion - Mastoid process (behind the ear).

Answer 3

The mastoid process of the temporal bone, superior nuchal line is the insertion. The manubrium sterni (body of the sternum) and medial portion of the clavicle is the origin. The action bilaterally is cervical flexion.

Answer 4

Lateral aspect of mastoid process and anterior half of superior nuchal line Lateral aspect of mastoid process and anterior half of superior nuchal line