BSIP VERO / CARLO / SCIENCE PHOTO LIBRARY BSIP VERO / CARLO / SCIENCE PHOTO LIBRARY
Urinary system. Illustration of an outline of the body showing the urinary system. There are two kidneys seen at upper left and right. The kidney on the right is seen in section, revealing the renal pyramids (light blue), which contain structures which filter the blood. The filtrate (urine) is passed down the ureters (yellow tubes) to the bladder (blue, lower centre), where it is stored. Urine is expelled from the body through the urethra (yellow), below the bladder.
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