pelvic splanchnic nerve
Medical Definition of pelvic splanchnic nerve
: any of the groups of parasympathetic fibers that originate with cells in the second, third, and fourth sacral segments of the spinal cord, pass through the inferior portion of the hypogastric plexus, and supply the descending colon, rectum, anus, bladder, prostate gland, and external genitalia—called also nervus erigens
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