Once these roots join, they form a "mixed nerve" that contains both sensory and motor fibers. Almost immediately after exiting the vertebral column, the nerve splits into two branches: the , which serves the deep muscles and skin of the back, and the ventral ramus , which serves the front of the trunk and the limbs. Regional Nerve Divisions
A diagram of the nerves in the back reveals a complex network responsible for motor control, sensation, and the transmission of signals between the body and the central nervous system. Unlike other regions of the body, the nervous supply of the back is primarily derived from the of the spinal nerves, though the anterior rami also play a crucial role in the lumbar region. nerve diagram back
A key feature of any back nerve diagram is the mapping of —areas of skin supplied by a single spinal nerve root. Once these roots join, they form a "mixed
The nerve diagram of the back begins with the spinal cord, which is a long, thin, tube-like structure that extends from the base of the brain down to the lower back. The spinal cord is protected by the vertebral column, which consists of 33 vertebrae that are stacked on top of each other. The vertebrae are divided into five regions: cervical, thoracic, lumbar, sacrum, and coccyx. Unlike other regions of the body, the nervous