This game activity will help you identify and describe the functions of various organs in their bodies. You'll will be able to tell the difference between the functions of the heart and the brain. They will also be able to learn about the parts of the digestive tract, such as the stomach and intestines. This is an important activity, which introduces the major organ systems of the human body. These systems include a number of tissues and organs that all function together as one functional unit. These systems are composed of the skin, stomach, esophagus and intestines. They break down food into nutrients and eliminate any waste. The excretory system is responsible for removing toxic nitrogen compounds from the blood and other waste. The nervous system is composed of sensory organs that transmit sensory information to the brain and send impulses to trigger appropriate glandular or muscular responses.