EVAN OTO / SCIENCE PHOTO LIBRARY EVAN OTO / SCIENCE PHOTO LIBRARY
An illustration of the islets of langerhans and branches of the pancreatic duct. The pancreatic duct (yellow) transports digestive enzymes secreted by pancreatic acini to the small intestine to aid in digestion. The islets of Langerhans are large spherical clusters of cells in the pancreas which secrete vital hormones, such as insulin and glucagon, directly into the blood.
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