Today people strive to great lengths to keep their body in a good, healthy condition. Every system in the body, let it be digestion, circulatory (of blood), immune, respiratory, cellular respiratory or kidneys and excretion are all vital. Each have their separate roles, but not one works separately. The human body works as a whole in order to survive, even though not all goes well all the time. The digestive system is in charge of …showed first 75 words of 2765 total…

…showed last 75 words of 2765 total…