Excretory System - ( ek skrâ tôr ë *  sis tâm ), The group of organs that get rid of cell waste.

   Kidneys - ( kid në ), The pair of organs of the excretory system that filter cell wastes from blood.

              Urine - ( yur ân ),  Aliquid formed in the kidneys consisting of nitrogen wastes, some salts, and extra water.

   Urinary Bladder - ( yur â nâr * blad âr ), A muscular, baglike organ that stores urine until it leaves the body.

   Plasma - ( plaz mâ ), The watery part of blood that carries nutrients, wastes, and blood cells.