At first glance, the excretory system appears to be a simple four-part organ system, but it is more complicated than this suggests. The kidneys, ureters, bladder, and urethra make up the excretory system. This system is responsible for removing waste via urine and maintaining proper chemical balances in the body. Waste gets filtered out from the blood through the kidneys, which convert it to urine and excrete it via the urethra.
For a body to be healthy and functional, internal systems must maintain physical and chemical homeostasis or a stable state of equilibrium. The excretory system is responsible for the chemical homeostasis of blood and waste. It filters the blood by maintaining the correct levels of water and dissolved substances. Required water and blood components recirculate through the body, while metabolic waste is filtered and passes through the urinary system.
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