trapezius

Either of two large flat triangular muscles running from the base of the occiput to the middle of the back that support and make it possible to raise the head and shoulders.

A large superficial muscle of the back of the neck and adjacent parts.

A large vertebrate skeletal muscle divided into an ascending, descending, and transverse portion, attaching the neck and central spine to the outer extremity of the scapula; it functions in scapular elevation, adduction, and depression.

either of two flat triangular muscles of the shoulder and upper back that are involved in moving the shoulders and arms