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WHERE IS THE POSITION OF CARDIAC,FUNDIC&PYLORIC REGIONS IN STOMACH? |
The stomach is a roughly J-shaped bad and has two orifices, two curvatures and two surfaces.The orifices are cardiac orifice and pyloric orifice. Cardiac orifice: It lies near the heart where the esophagus enters the stomach. This orifice is not guarded by any anatomic sphincter, the stomach. This orifice is not guarded by any anatomic sphincter. Pyloric orifice: It is formed by the pyloric canal (about 1 inch long). The canal joins the first part of small intestine, the duodenum, and creates an exit route for chyme. Unlike the cardiac orifice, the pyloric orifice is guarded by a proper sphincter, known as pyloric sphincter. Component Parts of the Stomach.—A plane passing through the incisura angularis on the lesser curvature and the left limit of the opposed dilatation on the greater curvature divides the stomach into a left portion or body and a right or pyloric portion. The left portion of the body is known as the fundus, and is marked off from the remainder of the body by a plane passing horizontally through the cardiac orifice. The pyloric portion is divided by a plane through the sulcus intermedius at right angles to the long axis of this portion; the part to the right of this plane is the pyloric antrum. |