urinary sistem´s functions, Filter blood and create urine as a waste by-product, Kidneys, Remove waste products and drugs from the body, Glomerulus, A ball formed of small blood capillaries, Erythropoietin, Controls red blood cell production in the bone marrow, Potassium and sodium, Chemicals kept in balance by the kidneys, Dark yellow or honey-colored urine, Means you need more water, Sphincter muscles, Help keep urine from leaking, Ureters, Carry urine from the kidneys to the bladder, Bladder, Stores urine and empties it through the urethra, Nerves in the bladder, alert a person when it is time to urinate, or empty the bladder.

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