What is it, the excretory system?
The excretory system is the union of various organs and glands that help to eliminate the waste from our bodies. The main role of the excretory system is to filter out cellular wastes, toxins and excess water or nutrients from the circulatory system.
Organs:
Kidneys: The waste is carried by the renal artery to the kidneys, which is responsible for creating the urine, with the help of the Nephron. To reach the kidneys that are the organs which subtracted waste, we need a process known as nutrition, which allows to acquire energy.
Lungs: The nutrients will go directly to blood, which carries the exchange gaseous through the lungs.
After creating the urine, blood in good condition is compressed in the Nephron on top, which carry blood in good condition through the renal vein back to the heart and lungs to pick up oxygen.
Ureters: 2 ureters carry urine from the kidneys to the urinary bladder.
Urinary Bladder: The urinary bladder temporarily stores urine until it is released from the body.
Urethra : The urethra is the tube that carries urine from the urinary bladder to the outside of the body. The outer end of the urethra is controlled by a circular muscle called a sphincter.
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