Posterior labial nerves

Posterior labial nerves are a group of nerves in the female human body that supply the skin and muscles of the labia majora. They are a branch of the pudendal nerve, which is itself a branch of the sacral plexus. The term "posterior labial nerves" comes from the Latin words "posterior" (meaning "behind") and "labium" (meaning "lip").

Anatomy

The posterior labial nerves originate from the pudendal nerve, which is formed from the ventral rami of the second, third, and fourth sacral nerves. The pudendal nerve gives off the posterior labial nerves as it courses through the pudendal canal in the pelvis.

The posterior labial nerves then travel to the labia majora, where they provide sensory innervation to the skin and motor innervation to the muscles. They also supply the bulb of vestibule, a part of the female genitalia.

Clinical significance

Damage to the posterior labial nerves can result in loss of sensation in the labia majora and potentially in sexual dysfunction. This can occur as a result of surgery, trauma, or certain medical conditions such as diabetes or multiple sclerosis.

See also

• Anterior labial nerves
• Perineal nerve
• Inferior rectal nerves

References

Posterior labial nerves Resources
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