Anterior Spinal Nerve Root

Posterior spinal nerve root - (radix dorsalis, pna; radices dorsalia, bna; radicis dorsalis, jna) - a paired root extending from the spinal cord at the exit point of the posterior branches of the spinal nerves.

The anterior spinal nerve root (radix ventralis) is a paired root extending from the spinal cord, located at the level of the anterior branches of the spinal nerves and directed to the lateral side.

The anterior roots of the spinal nerves consist of motor cells that innervate the muscles attached to the bones.

Motor fibers from the anterior roots are directed to the muscles that innervate the muscles attached to the bones and also innervate the external interosseous muscles.

The anterior spinal nerve root, also known as the dorsal root or anterior root of the spinal cord, is one of the two divisions of the human nervous system, responsible for transmitting nerve impulses from the spinal cord to the muscles and organs of the body. The anterior root consists of a plexus of nerve fibers running from the spinal cord into the spinal canal and is about 5 centimeters long.

Nerve fibers pass through the opening between the vertebrae and connect with the fibers of the motor muscles and organs. These fibers transmit information about body movement and position, and also respond to pain from pressure on the skin or nerve endings. The anterior roots connect to two points in the main spinal cord, where they divide into motor and sensory roots.

The anterior roots pass through numerous openings in the vertebral column and directly below the spine, allowing them to communicate with many of the body's nerves and muscles. For example, the anterior roots of the cervical spinal cord control the movement of the head, shoulders and arms, and the anterior roots of the thoracic spinal cord control the movement of the shoulders, chest and torso.

With injury, inflammation or other diseases, the anterior root can become dysfunctional or even damaged, which can lead to various symptoms and diseases. Spinal conditions such as spondylolisthesis, scoliosis, and compression fractures can affect the anterior root and lead to movement problems, pain, and weakness.