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| Solar Plexus. Celiac Plexus. Physical Structure |
The solar plexus or celiac is a dense network of
nerves surrounding the ventral aorta at the point where they leave the superior
mesenteric artery and the celiac artery, at the level of the first lumbar
vertebra, behind the stomach. It should especially sympathetic and right vagus
nerve. It nerve fibers of the sympathetic and parasympathetic nervous system
are combined. The solar plexus contributes to the innervation of
intra-abdominal viscera.
The solar plexus consists of a set of nerve ganglia,
highly interconnected each other interiorly to back:
The celiac ganglia, located at the height of the
adrenal glands, about 20 mm long, crescent-shaped with two horns. The closer to
the midline horn receives the terminal bifurcation of the right vagus nerve,
while the side and away from the midline horn receives the greater splanchnic
nerve.
The superior mesenteric ganglia are ovoid rather small
and are located on the front side of the abdominal aorta.
The nodes are also renal aortic ovoid and are located
in front of the origin of the renal artery on each side.
Abdominal pain caused by sensitivity of the solar
plexus is located at a midpoint between the lower tip of the sternum (xiphoid
process called) and the navel.
Blocking the innervations produced by the solar plexus
is used quite often for prolonged relief of abdominal pain caused by cancer,
especially pancreatic cancer.
