👉 The term "nervous root" refers to a portion of the spinal cord that is responsible for controlling and regulating the movement of the muscles in the legs, specifically the hamstrings. This area is known as the psoas muscle, which contracts when you bend your knees and lift your legs up. Nerve roots are small bundles of nerve fibers that terminate at specific points on the body's structure. The term "nervous root" refers to a single nerve fiber that has its terminal
