Kidney tubule, SEM

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Kidney tubule, SEM

Kidney tubule. Coloured scanning electron micrograph (SEM) of a section through a kidney tubule. The tubules function to reabsorb water, glucose and other small molecules from the filtrate, producing a concentrated urine. Each tubule consists of a lumen (interior) lined with cuboidal epithelial cells (pink). These cells are covered in many finger-like projections known as microvilli (orange), 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: x3000 when printed at 10 centimetres wide

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6333529

© THOMAS DEERINCK, NCMIR/SCIENCE PHOTO LIBRARY

Concentration Cross Section Histological Histology Kidney Lumen Microvilli Microvillus Renal Tubule Urinary System False Coloured Sectioned

EDITORS COMMENTS
This vibrant and detailed print captures the intricate beauty of a kidney tubule, as seen through a scanning electron microscope. The sectioned view reveals the inner workings of this vital organ, showcasing its role in maintaining our body's balance. The pink cuboidal epithelial cells that line the interior of the tubule are prominently displayed, their structure emphasized by numerous microvilli projections in orange. These finger-like extensions greatly increase the surface area available for reabsorption, allowing for efficient retrieval of water, glucose, and other small molecules from the filtrate. As these essential substances are absorbed back into the blood through interstitial fluid channels within the kidney, a concentrated urine is produced. This process ensures proper regulation and elimination of waste products from our bodies. With a magnification level of x3000 when printed at 10 centimeters wide, this image offers an up-close look at one aspect of our complex urinary system. It showcases not only the biological intricacies but also highlights how normal anatomy functions to maintain overall health. This photograph serves as a reminder of both the delicate nature and remarkable efficiency with which our bodies operate on a microscopic level.

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