PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY
Duodenal villi: false-colour scanning electron micrograph (SEM) of the duodenum, showing numerous tongue-shaped projections, or villi, protruding from the gut wall. The duodenum is the first part of the small intestine, extending after the stomach to the jejunum. As a major secretory region of the gut, serving to further break down food that has entered the stomach, the duodenum also receives secretory products from other organs. As in the other parts of the small intestine, digestion & absorption are maximised by the huge surface area conferred by the presence of villi. Magnification: x130 at 6x7cm size.
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