JACOPIN / BSIP / SCIENCE PHOTO LIBRARY JACOPIN / BSIP / SCIENCE PHOTO LIBRARY
Kidney glomerulus. Artwork of the structure of a glomerulus in a kidney. The function of the kidneys is to filter waste from the blood. This is done in units called nephrons. At the extremity of each nephron is a renal glomerulus, the basic filtration unit of the kidney. It consists of a Bowman's capsule (centre) that encloses the capillary (red) bringing blood to and from the glomerulus. Waste filtered from the blood drains back through a system of renal tubules (left) to eventually end up in the bladder via the kidney's ureter. Each kidney contains around a million glomeruli.
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