Which of the following best describes the body's kidneys?*

The kidneys are a pair of bean-shaped organs located towards your lower back. They are each about the size of a fist. Their main function is to filter your blood, removing wastes and extra water to form urine, which they then excrete. The kidneys also maintain overall fluid balance and regulate and filter minerals from the blood. They also produce hormones that help produce red blood cells, promote bone health, and regulate blood pressure.