🚽01
The Urinary System
Meet the kidneys, ureters, bladder and urethra.
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Kidney Anatomy
Cut a kidney in half. See the cortex, medulla, pyramids, calyces and pelvis.
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The Nephron
Follow the tiny filter unit, from glomerulus to collecting duct.
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Urine Formation
Filtration, reabsorption and secretion. See 180 L shrink to 1.5 L.
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Hormonal Control
See how ADH, aldosterone, RAAS and ANP tune water and salt.
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The Micturition Reflex
Fill the bladder, feel the urge, and let it go.
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