Sacral nerve

Sacral Nerves

Sacral nerves and their branches

The Sacral nerves are a group of five pairs of spinal nerves that emerge from the sacral vertebrae in the vertebral column. They are part of the peripheral nervous system and play a crucial role in transmitting signals between the spinal cord and the lower part of the body.

Structure

The sacral nerves are numbered S1 through S5 and exit the sacrum through the anterior sacral foramina. Each sacral nerve is connected to the spinal cord via a dorsal root and a ventral root. The dorsal root carries sensory information to the spinal cord, while the ventral root carries motor information from the spinal cord.

Function

The sacral nerves control the function of the pelvis and lower limbs. They are responsible for the sensation and motor control of the buttocks, genitals, and parts of the lower extremities. They also play a significant role in regulating the functions of the bowels and bladder.

Clinical significance

Damage or injury to the sacral nerves can lead to a range of conditions, including sacral nerve root syndrome, sciatica, and cauda equina syndrome. Treatment options can include medication, physical therapy, and in severe cases, surgery.

See also

• Spinal nerve
• Sacral plexus
• Cauda equina