A network of tiny blood vessels (capillaries) in the kidney that filters waste and water from the blood to form urine.
From Latin 'glomerulus' (small ball or sphere), named for its rounded, ball-like appearance when viewed under a microscope.
Your kidneys contain about a million glomeruli working 24/7, and together they filter about 180 liters of blood daily to make just 1-2 liters of urine—an incredibly efficient biological filtering system!
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