It is composed of an upper part, the splenius muscle of the head, and a lower part, the splenius muscle of the neck: They lie directly under the trapezius muscle. 1- semi-spinous of the head.
It is composed of an upper part, the splenius muscle of the head, and a lower part, the splenius muscle of the neck: They lie directly under the trapezius muscle. 1- semi-spinous of the head.