BSIP ESTIOT / SCIENCE PHOTO LIBRARY BSIP ESTIOT / SCIENCE PHOTO LIBRARY
Healthy urinary tract. Illustration of the outline of the torso of a woman showing a healthy urinary system. The two kidneys (red) each have a ureter (yellow tube) to carry urine down to the bladder (orange), which lies between the hip joints. Urine is expelled from the body through the urethra, below the bladder. The kidneys filter the blood producing dilute urine. The urine is concentrated by water reabsorption before running into the ureters. The urine is held in the bladder until it is expelled from the body.
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