MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Blood vessels in stomach wall, historical anatomical artwork. This enlarged section through the wall of the stomach shows the network of arteries (red), veins and capillaries (both blue) that supply blood to the surface. The pits that can be seen on the inner surface of the stomach (upper) are gastric glands, which secrete digestive enzymes into the organ. This illustration is taken from the 19th century French textbook The Atlas of Human Anatomy and Surgery by J. M. Bourgery and N. H. Jacob.
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