stomach diagram anatomy

August 03, 2026

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Learn stomach anatomy with a labeled diagram, parts of stomach, four regions, wall layers & functions to understand how digestion works. Overview of the muscular layers and mucosa of the stomach. The stomach is an organ of the digestive system, specialized in the accumulation and digestion of food. Its anatomy is quite complex; it consists of four parts, two curvatures and receives its blood supply mainly from the celiac trunk. In the human digestive system, the stomach lies between the esophagus and the duodenum (the first part of the small intestine). It is in the left upper quadrant of the abdominal cavity. The top of the stomach lies against the diaphragm. Lying behind the stomach is the pancreas. Your stomach sits in your upper abdomen on the left side of your body. The top of your stomach connects to a valve called the esophageal sphincter (a muscle at the end of your esophagus). Stomach, saclike expansion of the digestive system, between the esophagus and the small intestine; it is located in the anterior portion of the abdominal cavity in most vertebrates. For related background details, please refer to our report on free car wiring schematics. The stomach plays a vital role in digestion, serving as a reservoir for food, breaking it down mechanically and chemically, and regulating its passage into the small intestine. The stomach is located in the upper abdomen, primarily occupying the epigastric and left hypochondriac regions. Its size, shape and position can vary between individuals and change with respiration and body position. Muscle contractions and stomach acid break down food to absorb nutrients. Indigestion, GERD, and ulcers commonly affect the stomach. Eating slowly and staying hydrated can help keep your...