jueves, 24 de enero de 2013

digestive system
Drawing of the digestive system with sections labeled: esophagus, stomach, liver, gallbladder, duodenum, pancreas, small intestine, ileum, appendix, cecum, ascending colon, transverse colon, descending colon, sigmoid colon, rectum, and anus.


 
The digestive system is made up of the digestive tract—a series of hollow organs joined in a long, twisting tube from the mouth to the anus—and other organs that help the body break down and absorb food (see figure).
Organs that make up the digestive tract are the mouth, esophagus, stomach, small intestine, large intestine—also called the colon—rectum, and anus. Inside these hollow organs is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food. The digestive tract also contains a layer of smooth muscle that helps break down food and move it along the tract.
Drawing of the digestive system with sections labeled: esophagus, stomach, liver, gallbladder, duodenum, pancreas, small intestine, ileum, appendix, cecum, ascending colon, transverse colon, descending colon, sigmoid colon, rectum, and anus.

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