A muscle of considerable size spread over the lower half of the side of the neck, from which its fibres converge toward the cervical angle of the scapula.

Attachments. - To the transverse processes of the four or five posterior cervical vertebras, and to the internal surface of the upper extremity of the scapula, just in front of the serratus magnus.

Action. - This muscle, like the one previously described, may act from either extremity. When the neck is made a fixed point it would pull forward the upper end of the scapula and cause the shoulder point to recede. When the scapula is fixed, the muscle acting alone would draw the neck to one side, or, acting with its fellow, the neck would be lifted up.