The urinarysystem (see Figure 1) is a group of organs in the body concerned with filtering out excess fluid and other substances from the bloodstream to help maintain homeostasis for optimal cell and tissue metabolism.
The urinarysystem organs include the kidneys, ureters, bladder, and urethra.
Kidneys are the most complex and critical part of the urinarysystem.
The urinarysystem maintains blood homeostasis by filtering out excess fluid and other substances from the bloodstream and secreting waste.
They are essential in the urinarysystem and also serve homeostatic functions such as the regulation of electrolytes, maintenance of acid–base balance, and regulation of blood pressure (via maintaining salt and water balance).
They serve the body as a natural filter of the blood and remove wastes that are diverted to the urinary bladder.