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Intestinal brush border, TEM
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Intestinal brush border, TEM
Intestinal brush border. Transmission electron micrograph (TEM) of intestinal absorptive cells sectioned horizontally at their apex to show the surface microvilli (round). Microvilli are slender finger-like extensions of the intestinal cell that serve to greatly increase the surface area for absorption of nutrients from the lumen of the gastrointestinal tract. The brush borders of the intestinal lining are the site of terminal carbohydrate digestion. The microvilli have enzymes for this final part of digestion anchored into their apical plasma membrane as integral membrane proteins. These enzymes are found near to the transporters that will then allow absorption of the digested nutrients. Magnification: x6, 000 when printed at 10 centimetres wide
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Media ID 9240563
© MICROSCAPE/SCIENCE PHOTO LIBRARY
Absorption Black And White Brush Border Cell Surface Colored Digestion Digestive System Epithelial Epithelium Gastroenterological Gastroenterology Gastrointestinal Histological Histology Intestinal Intestine Intestines Lining Microvilli Microvillus Transmission Electron Micrograph Transmission Electron Microscope Transverse Section Villi Villus Cells Section Sectioned
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This print from Science Photo Library showcases the intricate details of the intestinal brush border, as seen through a transmission electron microscope (TEM). The image reveals a section of horizontally cut absorptive cells in the intestine, specifically highlighting their surface microvilli. These slender finger-like extensions play a crucial role in increasing the surface area for nutrient absorption from the gastrointestinal tract. The brush borders of the intestinal lining serve as the site for terminal carbohydrate digestion. Anchored into their apical plasma membrane, these microvilli house enzymes responsible for this final stage of digestion. Positioned near transporters that facilitate nutrient absorption, these enzymes ensure efficient uptake of digested nutrients. With a magnification level of x6,000 when printed at 10 centimeters wide, this print offers an up-close and detailed view of this vital aspect of our digestive system. The colored and black-and-white composition adds depth to its visual appeal while emphasizing its biological significance. Ideal for biology enthusiasts or those studying gastroenterology, this image provides valuable insights into the structure and function of our gut epithelium. It serves as a reminder that even on a microscopic scale, our body's systems work harmoniously to maintain health and enable proper digestion and absorption processes within us.
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