Describe the anatomy of the celiac plexus.
The celiac plexus is part of the sympathetic
nervous sys-tem and is made up of the celiac, superior mesenteric, and
aortico-renal ganglia. Nerve fibers that traverse the celiac plexus arise from
cell bodies from T5–T12 and leave the spinal cord without
synapsing in the paravertebral ganglia. These sympathetic fibers form the
greater, lesser, and least splanchnic nerves and coalesce around the celiac
artery at approximately the L1 level. Here they synapse with
post-ganglionic fibers that supply the intra-abdominal organs below the
diaphragm up to the splenic flexure of the large intestine. These include the
stomach, small and large intes-tine, pancreas, hepatobiliary system, kidneys,
adrenals, spleen, and omentum. The celiac plexus contains visceral afferent and
efferent fibers, as well as, some parasympathetic fibers.