3: The Excretory System

The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain

The large intestine, or the colon, is the last part of the excretory system It is the organ that removes solid waste from the body It's function is not only

immune system The simplest system is that of contractile vacuoles present in microorganisms Flame cells and nephridia in worms perform excretory functions and maintain

respiratory system The digestive system interacts with other body systems to obtain and use energy from food Blood, part of the circulatory system, transports nutrients to other