Explain the digestion takes place in small intestine?
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The small intestine is the part of the intestines where 90% of the digestion and absorption of food occurs, the other 10% taking place in the stomach and large intestine. The main function of the small intestine is absorption of nutrients and minerals from food. Digestion involves two distinct parts.Anatomy of the small intestine
The small intestine begins with the duodenum. The duodenum begins at the duodenal bulb and goes around the head of the pancreas and ends as it returns to the peritoneal cavity at the ligament of Treitz. The peritoneal cavity is a thin membrane cavity that covers the organs within the abdomen with some exceptions.
The remainder of the small intestine is suspended within the peritoneal cavity by a thin, broad-based mesentery that is attached to the posterior abdominal wall. This allows free movement of the small intestine within the abdominal cavity.
After the duodenum comes the next 40% of the mobile small intestine called the jejunum. The remaining 60% is the ileum.
The jejunum occupies the left upper portion of the abdomen while the ileum is positioned in the right side and upper part of the pelvis.
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