Human digestive system, artwork

Human digestive system, artwork

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Credit: HENNING DALHOFF / SCIENCE PHOTO LIBRARY

Caption: Human digestive system, artwork. At top, food from the mouth forms a bolus that is swallowed down the oesophagus. At centre, the bolus is about to enter the stomach (arrow), which secretes acid that breaks down the food. Digested food then passes out of the stomach through the pyloric valve (lower left). Nutrients are absorbed in the small intestine which has a folded surface (centre right) with finger-like protrusions called villi (magnified view at centre left). The villi are lined with absorptive cells, passing nutrients to the blood vessels (red and blue). Lymph vessels (green) and the diaphragm (above stomach) are also shown.

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Keywords: absorptive cells, alimentary canal, anatomical, anatomy, artery, artwork, biological, biology, blood vessel, bolus, brain, capillaries, capillary, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, diaphragm, digestion, digestive system, enterocytes, epithelium, esophagus, fold, folded, folds, food, gastric, gastroenterology, gastrology, gut, head, healthy, human body, illustration, inset, intestinal, lymph vessel, mouth, normal, nutrient absorption, oesophagus, organ, physiological, physiology, pyloric sphincter, small intestine, stomach, valve, vein, villi, villus

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