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Colour SEM of villi in the small intestine
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Colour SEM of villi in the small intestine
Intestinal villi. Coloured Scanning Electron Micrograph (SEM) of villi in the small intestine. Villi are folded projections of the mucous membrane that line the inside wall of the small intestine. They serve to increase the surface area available for absorption of the products of digestion. Covering each villus is a layer of absorptive epithelial cells, which themselves are covered with microvilli (not visible). The dark pits on the surface of each villus are goblet cells. These produce mucus to lubricate the passage of food and protect the intestinal wall from self-digestion. Magnification: x180 at 5x7cm size
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Media ID 6450477
© PROF CINTI & V. GREMET/SPL
Digestion Digestive System Goblet Cell Intestine Mucosa Small Small Intestine Villus
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This print showcases the intricate beauty of the small intestine's villi, captured using a coloured Scanning Electron Micrograph (SEM). The small intestine is lined with these folded projections called villi, which play a crucial role in absorbing the products of digestion. By increasing the surface area available for absorption, they ensure efficient nutrient uptake. Each villus is covered by absorptive epithelial cells that are further adorned with microvilli, although not visible in this image. These microscopic structures greatly enhance the absorptive capacity of the small intestine. However, what catches one's attention are the dark pits on each villus - these are goblet cells. Goblet cells have an essential function in maintaining intestinal health and functionality. They produce mucus that serves two purposes: lubricating food passage and protecting against self-digestion by preventing direct contact between digestive enzymes and the intestinal wall. With a magnification of x180 at 5x7cm size, this SEM image provides us with an up-close look into our own anatomy. It reminds us of both our vulnerability and resilience as complex organisms capable of intricate processes like digestion. This photograph from Science Photo Library beautifully captures nature's design within our bodies while highlighting its scientific significance without any commercial intent or association to a specific company.
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