Cavernous nerves of penis

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Cavernous nerves of penis
From prostatic plexus
Latin nervi cavernosi penis
TA A14.3.03.056M
FMA 75477
Anatomical terms of neuroanatomy

The cavernous nerves are post-ganglionic parasympathetic nerves that facilitate penile erection. They arise from cell bodies in the inferior hypogastric plexus where they receive the pre-ganglionic pelvic splanchnic nerves (S2-S4).

There are both lesser cavernous nerves and a greater cavernous nerve.

Clinical considerations[edit]

These nerves are susceptible to injury following prostatectomy.

Nerve-Sparing prostatectomy was invented for surgeons to avoid injuring the nerves and causing erectile dysfunction complications. During surgery, a doctor may apply a small electrical stimulation to the nerve and measure the erectile function with a penile plethysmograph.[1] This test aids the surgeon in identifying the nerves, which are difficult to see.[2]


  1. ^ Dr. Peter Scardino's Prostate Book, Avery, 2005
  2. ^ Blue Torch [1] December 2007

External links[edit]