The celiac ganglion is a cluster of nerve cells located in the abdomen, near the aorta and the diaphragm. It is part of the autonomic nervous system and plays a crucial role in regulating the functions of various abdominal organs, including the stomach, liver, and intestines. This ganglion serves as a relay point for nerve signals, connecting the sympathetic nervous system to the digestive organs. It helps control processes such as digestion, blood flow, and the release of digestive enzymes, ensuring that the body efficiently manages its digestive functions.