MeSH definition : The major nerves supplying sympathetic innervation to the abdomen. The greater, lesser,
and lowest (or smallest) splanchnic nerves are formed by preganglionic fibers from
the spinal cord which pass through the paravertebral ganglia and then to the celiac
ganglia and plexuses. The lumbar splanchnic nerves carry fibers which pass through
the lumbar paravertebral ganglia to the mesenteric and hypogastric ganglia.;
The major nerves supplying sympathetic innervation to the abdomen. The greater, lesser,
and lowest (or smallest) splanchnic nerves are formed by preganglionic fibers from
the spinal cord which pass through the paravertebral ganglia and then to the celiac
ganglia and plexuses. The lumbar splanchnic nerves carry fibers which pass through
the lumbar paravertebral ganglia to the mesenteric and hypogastric ganglia.