The organ responsible for filtering blood is the kidneys. Each person typically has two kidneys, which play a crucial role in maintaining homeostasis by regulating electrolyte balance, blood pressure, and waste removal. They filter out toxins, excess salts, and other waste products from the bloodstream, producing urine for excretion. The kidneys also help manage the body’s fluid levels and maintain an optimal acid-base balance. In addition, they produce important hormones that influence red blood cell production and regulate blood pressure. Healthy kidney function is vital for overall health and well-being.