Pelvic splanchnic nerves
|Nerve: Pelvic splanchnic nerves|
|Latin||nervi pelvici splanchnici|
The pelvic splanchnic nerves arise as branches of spinal nerves S2-S4 (which are part of the sacral plexus). They travel to their side's corresponding inferior hypogastric plexus, located on the side of the rectum.
They contain both preganglionic parasympathetic fibers as well as visceral afferent fibers.
The parasympathetic nervous system is referred to as the craniosacral outflow; the pelvic splanchnic nerves are the sacral component. They are in the same region as the sacral splanchnic nerves, which arise from the sympathetic trunk and provide sympathetic efferent fibers.
Proximal to the splenic flexure of the transverse colon, the gastrointestinal tract is supplied its parasympathetic fibers by the vagus nerve. Distal to the splenic flexure, the pelvic splanchnic nerves take over.
In Popular Culture
In the Futurama episode, Parasites Lost, the Professor creates a plan to enter Fry using micro-droids and stimulate the "pelvic splanchnic ganglion" to cause a large bowel movement, to remove a worm infestation from him.
- Pelvic+splanchnic+nerves at eMedicine Dictionary
- SUNY Labs 43:15-0107
- Anatomy at UMich autonomics_abdomen_module/abdomen_07
- Human anatomy at Dartmouth figures/chapter_32/32-6.HTM
- Norman/Georgetown pelvis (pelvicnerves)