The stomach is located primarily in the abdominal cavity of the body, in the upper left quadrant of the abdomen.
The majority of the stomach is located in the left quaternary rib area, with a small portion in the upper part of the abdomen. The anterior wall of the stomach is adjacent to the liver on the right side, to the diaphragm on the left side, to the abdomen on the anterior side, and to the pancreas, transverse colon, and left kidney on the posterior side. The base of the stomach is adjacent to the spleen.
The upper opening of the stomach is the cardia, which is connected to the esophagus; the lower opening is the pylorus, which is connected to the duodenum. The stomach is divided into the cardia, fundus, body, and pylorus. The portion near the cardia is the cardia. The part above the plane of the cardia that expands to the upper left is the fundus of the stomach. The bottom of the stomach down to the angular notch is the body of the stomach. The part of the stomach between the lower border of the body and the pylorus is the pyloric portion.
The stomach is a pouch-shaped organ, and its position varies greatly with body size and position, as does the degree of filling of the stomach. The position of the stomach is relatively higher in fatter people and lower in thinner people.