Inferior Hypogastric Plexus
Inferior hypogastric plexus is a plexus of nerves that supply the viscera of pelvis. The right and left inferior hypogastric plexuses lie on corresponding side of the rectum in males and, the rectum and the vagina in females.
Each plexus is formed by nerve fibers coming through the following sources:
- Hypogastric nerve (from the superior hypogastric plexus)
- Lumbar splanchnic nerves that emerge from the sympathetic chain
- Pelvic splanchnic nerves that contribute parasympathetic fibers to the plexus
Small ganglia are found where the nerves join together.
Inferior hypogastric plexus gives numerous branches to the viscera of pelvis. These branches contain postganglionic sympathetic fibers, preganglionic and postganglionic parasympathetic fibers and visceral afferent fibers. The branches are not given directly. Instead they pass to the viscera via small subsidiary plexuses including middle rectal plexus, vesical plexus, prostatic plexus, and uterovaginal plexus.