JUAN GAERTNER / SCIENCE PHOTO LIBRARY JUAN GAERTNER / SCIENCE PHOTO LIBRARY
Animation of a renal corpuscle in the kidney. Renal corpuscles are responsible for filtering the blood in the kidneys. The corpuscle is composed of a glomerulus surrounded by the Bowman's capsule. The glomerulus is a tight ball of capillaries, whose walls are surrounded by a network of cells called podocytes. Water, ions and small molecules pass from the blood through the capillary walls and slits between the podocytes into the Bowman's capsule, which collects the fluid. This fluid is collected by the kidney and passed to the bladder as urine.
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