BSIP VEM / SCIENCE PHOTO LIBRARY BSIP VEM / SCIENCE PHOTO LIBRARY
Pancreas. Illustration of the human digestive system highlighting the pancreas (blue). The pancreas produces most of the digestive enzymes that break down food, as well as sodium bicarbonate to neutralise stomach acid. The enzymes are secreted in an inactive form until they pass from the pancreatic duct (brown, in pancreas) into the duodenum, where they are activated by other enzymes. The pancreas also produces the hormones insulin and glucagon, which control blood sugar levels. Also shown here are the liver (top left), stomach (top right), small intestine (lower centre), and large intestine (around small intestine).
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