Structure
The superior hypogastric plexus is situated around the abdominal aorta between the origin of the inferior mesenteric artery and the splitting of the abdominal aorta into the two common iliac arteries. It receives contributions from the two lower lumbar splanchnic nerves, which are branches of the ganglionated trunk (chain ganglia). This plexus continues down into the pelvis as the two pelvic nerves, which continue to form the inferior hypogastric plexus located within the pelvic basin. The inferior hypogastric plexus receives additional contributions from the sacral splanchnic branches of the ganglionated trunk and the pelvic splanchnic nerves from the anterior primary rami of S2-4.
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