why should only a small quantity of food be passed from stomach or duodenum
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The stomach is a J-shaped sac connecting the esophagus above and the small intestine below. The first part of the small intestine is known as the duodenum. The stomach varies considerably in size, shape and position but lies in the upper central part of the abdomen behind the lower ribs. Although it is a single organ, several different parts of the stomach exist: the fundus, body, antrum and pylorus. Food passes through the pylorus and into the duodenum where further digestion occurs.
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