Matching Pairs Excretory System MatchOnline version Test your knowledge of the human excretory system with this matching pairs game! by Rachel Jackson 1 Nephron 2 Sphincter 3 Kidneys 4 Urinary System 5 Excretion 6 Liver 7 Skin 8 Bladder 9 Urethra 10 Ureters 11 Sweat 12 Urine Muscle that controls the release of urine Carries urine from bladder to outside the body Transport urine from kidneys to bladder Processes waste products from cell metabolism into safer substances Liquid waste excreted by the kidneys Process of removing wastes from the body Filter waste from blood Functional unit of the kidney Stores urine Largest organ in the human body Eliminates waste from the body Salty waste excreted by the skin