The superior mesenteric plexus is a continuation of the lower part of the celiac plexus, receiving a branch from the junction of the right vagus nerve with the plexus.

It surrounds the superior mesenteric artery, accompanies it into the mesentery, and divides into a number of secondary plexuses, which are distributed to all the parts supplied by the artery, viz., pancreatic branches to the pancreas; intestinal branches to the small intestine; and ileocolic, right colic, and middle colic branches, which supply the corresponding parts of the great intestine.

The nerves composing this plexus are white in color and firm in texture; in the upper part of the plexus close to the origin of the superior mesenteric artery is the superior mesenteric ganglion.

• The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses.
• Diagram of efferent sympathetic nervous system.
• Lower half of right sympathetic cord.

• Inferior mesenteric plexus

This article incorporates text in the public domain from page 987 of the 20th edition of Gray's Anatomy (1918)

• figures/chapter_32/32-6.HTM: Basic Human Anatomy at Dartmouth Medical School

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