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How does the excretory system work?

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Quick Answer

The excretory system is a system of organs that work together to rid the body of any waste. The excretory systems includes the lungs, ureter, urethra, liver, urinary bladder, kidneys and skin. The excretory system controls the volume of extracellular fluid and also maintains ionic balance in the fluid. The system controls the pH and osmotic concentration of the fluid, and it excretes urea, uric acid and ammonia.

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Full Answer

According to the Monroe County Women's Disability Network, the lungs taken in oxygen, and carbon dioxide is left after the body absorbs the oxygen. The skin sweats to cool the body as well as to remove dirt, bacteria and dead skin cells from pores. Skin is the largest organ on the human body, and it also protects the tissue and organs of the body. The kidneys filter out the blood and expel waste through the urine.

After the blood is cleaned by the kidneys, it makes it's way through the veins and back to the heart. The kidneys also control the amount of liquids in our bodies. Ureters are muscles that force the urine from the kidneys to the bladder. The average adult has a ureter that is about 12 inches long. The bladder is the organ that collects the urine once it passes through the kidneys. From the bladder, the urine exits via the urethra. Urine includes inorganic salts, urea, water and other waste.

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