What is the role of the kidneys?

The kidneys play a vital role in the body by filtering blood and producing urine. This process is crucial for maintaining homeostasis, as the kidneys help regulate fluid balance, electrolyte levels, and the removal of waste products from the bloodstream. As blood flows through the kidneys, waste products, excess ions, and water are filtered out to form urine, which is then excreted from the body. This filtration process also contributes to regulating blood pressure and maintaining the body's overall acid-base balance. While the kidneys do produce hormones that aid in blood pressure regulation and red blood cell production, their primary and most essential function is the filtration of blood and urine production.