innervates innervates contributes to morphology of neuron projection bundle sympathetic nervous system abdomen nerve splanchnic nerve All carry sympathetic fibers except for the pelvic splanchnic nerves, which carry parasympathetic fibers BAMS:spn EMAPA:37959 FMA:5883 GAID:800 MESH:D013153 The major nerves supplying sympathetic innervation to the abdomen, including the greater, lesser, and lowest (or smallest) splanchnic nerves that are formed by preganglionic fibers from the spinal cord which pass through the paravertebral ganglia and then to the celiac ganglia and plexuses and the lumbar splanchnic nerves carry fibers which pass through the lumbar paravertebral ganglia to the mesenteric and hypogastric ganglia. UBERON:0003715 splanchnic nerves uberon visceral nerve sympathetic nerve