Pudendal plexus (nerves)

Pudendal Plexus (Nerves)

The Pudendal Plexus is a network of nerves that supplies the pelvic region and genitalia. It is derived from the second, third, and fourth sacral nerves and is part of the larger sacral plexus. The pudendal plexus is responsible for the innervation of the perineum, external genitalia, and parts of the lower urinary tract and rectum.

Anatomy

The pudendal plexus is formed by the anterior divisions of the second, third, and fourth sacral nerves. It gives rise to the inferior rectal nerves, perineal nerves, and the pudendal nerve. The pudendal nerve is the largest nerve of the pudendal plexus and carries sensory and motor fibers.

Function

The pudendal plexus plays a crucial role in the sensory and motor innervation of the pelvic region. It provides sensation to the external genitalia and perineum and controls the muscles of the pelvic floor, including the sphincter muscles of the rectum and urethra.

Clinical Significance

Damage to the pudendal plexus can result in a variety of conditions, including pudendal neuralgia, pelvic pain, and sexual dysfunction. Pudendal neuralgia is characterized by chronic pelvic pain, often exacerbated by sitting. It can be caused by childbirth, surgery, or prolonged cycling.

See Also

• Sacral plexus
• Pudendal nerve
• Pelvic floor
• Pudendal neuralgia