Final answer:
The solar or celiac plexus is located in the upper abdomen, behind the stomach, and just below the sternum where the ribcage converges, near the upper edges of the pancreas.
Step-by-step explanation:
The solar plexus, also known as the celiac plexus, is located in the pit of the stomach in front of the aorta. It is situated below the ribcage and just below the sternum. The yellow arrowhead in the picture represents the location of the solar plexus. The solar plexus, or celiac plexus, is a cluster of nerves and ganglia located in the upper abdomen, just behind the stomach and in front of the aorta. It resides in a space that is typically retroperitoneal, meaning that it is situated behind the peritoneum, the lining of the abdominal cavity.
The solar plexus controls organ function in the abdomen by receiving inputs from splanchnic nerves and central sympathetic neurons. Within the ribcage, it is positioned just below the sternum, at the level where the ribs converge. This area is approximately at the upper edges of the pancreas, which is also retroperitoneal and lies transversely behind the stomach.