Anatomy of the Stomach STEVE GSCHMEISSNER/SPL/Getty Images The wall of the stomach is structurally similar to other parts of the digestive tube, with the exception that the stomach has an extra oblique layer of smooth muscle inside the circular layer, which aids in the performance of complex grinding motions.
Anatomy of the human stomach. Stocktrek Images / Getty Images. Contractions of gastric smooth muscle serve two basic functions. First, it allows the stomach to grind, crush and mix ingested food, liquefying it to form what is called “chyme.”.
The stomach is an organ of the digestive system. It is an expanded section of the digestive tube between the esophagus and small intestine. Its characteristic shape is well known. The right side of the stomach is called the greater curvature and the left the lesser curvature.