Chapter XC: Section 134: From the sympathetic in the hinder region of the thorax

a nerve, the great splanchnic nerve, arises, and runs, back to a ganglionated nervous network, just behind the coeliac artery, into which the vagus also enters; this is the coeliac ganglion, and together with a similar superior mesenteric ganglion around the corresponding artery, makes up a subsidiary visceral nervous network, the solar plexus. A similar and smaller nervous tangle, bearing an inferior mesenteric ganglion, lies near the inferior mesenteric artery.