Surf Wiki
Save to docs
general/nerves-of-the-lower-limb-and-lower-torso

From Surf Wiki (app.surf) — the open knowledge base

Perineal nerve

Nerve of the perineum

Nerve of the perineum

FieldValue
NamePerineal nerve
Latinnervi perineales
ImageGray542.png
Image2Pudendal nerve.svg
Caption2Pudendal nerve, its course through the lesser sciatic foramen, and branches, including inferior anal at bottom right.
CaptionThe superficial branches of the internal pudendal artery. (Perineal nerve visible but not labeled.)
InnervatesPerineum, scrotum or labia majora, superficial transverse perineal muscle, bulbospongiosus muscle, ischiocavernosus muscle, bulb of penis, levator ani, external anal sphincter
BranchFromPudendal nerve

The perineal nerve is a nerve of the pelvis. It arises from the pudendal nerve in the pudendal canal. It gives superficial branches to the skin, and a deep branch to muscles. It supplies the skin and muscles of the perineum. Its latency is tested with electrodes.

Structure

The perineal nerve is a branch of the pudendal nerve. It lies below the internal pudendal artery. It accompanies the perineal artery. It passes through the pudendal canal for around 2 or 3 cm. Whilst still in the canal, it divides into superficial branches and a deep branch. The superficial branches of the perineal nerve become the posterior scrotal nerves in men, and the posterior labial nerves in women. The deep branch of the perineal nerve (also known as the "muscular" branch) travels to the muscles of the perineum. Both of these are superficial to the dorsal nerve of the penis or the dorsal nerve of the scrotum.

Function

The perineal nerve supplies the skin and muscles of the perineum. The superficial branches supply sensation to the perineum, and the scrotum in men or the labia majora in women. The deep branch supplies superficial transverse perineal muscle, the bulbospongiosus muscle, the ischiocavernosus muscle, the bulb of penis, levator ani, and the external anal sphincter.

Clinical significance

The latency of the perineal nerve can be measured with electrodes. It is used to test nerve function.

Additional images

File:Gray837.png|Sacral plexus of the right side. (Perineal nerve visible at center right.)

References

References

  1. Rea, Paul. (2015). "Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Limbs". [[Academic Press]].
  2. (2010). "Complications of Urologic Surgery - Prevention and Management". [[Saunders (imprint).
  3. Essential Clinical Anatomy. K.L. Moore & A.M. Agur. Lippincott, 2 ed. 2002. Page 263
  4. (2015). "Handbook of Clinical Neurology". [[Elsevier]].
  5. Swash, Michael. (2008). "Neurology and General Medicine". [[Churchill Livingstone]].
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

nerves-of-the-lower-limb-and-lower-torso
Want to explore this topic further?

Ask Mako anything about Perineal nerve — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report