Superior nuchal line - Linea nuchalis superior
Extending lateralward from the external occipital protuberance on either side are two curved lines, one a little above the other. The lower is termed the superior nuchal line. The superior nuchal line gives origin to the Occipitalis and Trapezius, and insertion to the Sternocleidomastoideus and Splenius capitiT
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
General Anatomy > Bones; Skeletal system > Axial skeleton > Cranium > Occipital bone > Superior nuchal line