Plexus sacralis

Plexus Sacralis

The Plexus Sacralis is a network of nerve fibers that originate from the sacral segments of the spinal cord. It is part of the larger lumbosacral plexus, which supplies motor and sensory nerves to the lower part of the body.

Anatomy

The Plexus Sacralis is formed by the anterior rami of the sacral spinal nerves S1 to S4 and part of S5. These nerves branch and interconnect to form a complex network of nerves, which includes the sciatic nerve, the largest nerve in the body.

Function

The Plexus Sacralis provides motor and sensory innervation to the pelvis and lower limbs. It controls muscles in the pelvic region and the back of the thigh, and provides sensation to the skin of the buttocks, genitals, and part of the lower limb.

Clinical Significance

Damage to the Plexus Sacralis can result in a range of neurological and functional problems, including sciatica, a condition characterized by pain, numbness, or weakness in the lower limbs. Other conditions associated with the Plexus Sacralis include cauda equina syndrome and sacral nerve root cysts.

See Also

• Nervous system
• Spinal cord
• Lumbosacral plexus
• Sciatic nerve