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