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Kidney tubules, SEM
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Kidney tubules, SEM
Kidney tubules. Coloured scanning electron micrograph (SEM) of proximal convoluted tubules (dark brown) in the kidney. The proximal convoluted tubules function to reabsorb water, glucose and other small molecules from the filtrate, producing a concentrated urine. The tubules consist of a lumen (interior) lined with cuboidal epithelial cells. These cells are covered in many finger-like projections known as microvilli, which serve to increase the cells surface area for reabsorption. The reabsorbed molecules move into the interstitial fluid of the kidney and are absorbed back into the blood. The liquid in the tubules passes to the bladder. Magnification: x420 when printed 10cm wide
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Media ID 6449763
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Concentrate Concentration Cuboidal Epithelia Epithelium False Colour Histological Histology Kidney Lumen Magnified Image Microscopic Photos Microvilli Microvillus Physiological Physiology Proximal Convoluted Tubule Reabsorption Renal Subjects Tubules Urinary System False Coloured
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This print showcases the intricate beauty of kidney tubules, as captured by a scanning electron microscope (SEM). The image is colored to highlight the proximal convoluted tubules, which play a vital role in kidney function. These tubules are responsible for reabsorbing water, glucose, and other small molecules from the filtrate, ultimately producing concentrated urine. The lumen of these tubules is lined with cuboidal epithelial cells that possess numerous finger-like projections called microvilli. These microvilli greatly increase the surface area of the cells, enabling efficient reabsorption. The reabsorbed molecules then enter the interstitial fluid before being absorbed back into the bloodstream. With a magnification of x420 when printed at 10cm wide, this SEM image offers an up-close look at this microscopic marvel within our bodies. It provides valuable insights into renal physiology and histology while showcasing the complexity and precision of our urinary system. This visually striking photograph not only serves as a testament to human anatomy but also highlights scientific advancements in imaging technology. Its false-colored presentation adds depth and dimension to better appreciate its details. Whether used for educational purposes or personal fascination with biology and physiology subjects, this print from Science Photo Library is sure to captivate viewers' imagination and curiosity about our incredible biological systems.
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