Why do the kidneys receive 25% of cardiac output?Why is urine formed "outside the body"? Why is urine "composed of blood"?Why is everything filtered, but not reabsorbed, lost from the body as urine?Why is a urinalysis critically important for the determination of good health?Why are women more prone to urinary tract infections? Why is inflammatory damage to the kidneys associated with strep throat in children?Why is it important to monitor fluid intake on dialysis?