Everything you put into the body – be it food, drink, or air – has to get out at some point. Fluids are processed and expelled as urine or sweat, carbon dioxide is expelled from inhaled air, and digested food is expelled as feces.
Enter the excretory system – the system responsible for removing waste products from the body. This system is largely involved with the excretion of fluids and waste products through urine; therefore, it is closely associated with the urinary system.
The main organs of this system are the kidneys. These bean-shaped organs are composed of millions of nephrons and play a vital role in maintaining homeostasis. Kidneys remove wastes and excess fluid from blood to produce urine, which travels to the bladder through a pair of ureters. During urination, the bladder empties and urine passes through the urethra to exit the body.
Many other parts and organs of the body are involved in excreting wastes in some way, such as the liver, large intestine, lungs and the sweat glands in the skin. Solid waste, for instance, is eliminated through the large intestine.
The excretory system diagram quiz provided here can assist you in learning the system’s different components, as well as improve your grasp on its roles and functions.