A boiler is a closed vessel in which water or other fluid is heated. The fluid does not necessarily boil. (In North America, the term furnace is normally used if the purpose is not to boil the fluid.)
What are the major jobs of the digestive system? the main jobs of the digestive system system is to break down food so it can be absorbed into the blood stream and large intestine, to nourish the cells to provide energy , anâ¦d to get rid of the leftover food that the body cannot use. 4 people found this useful.
the main job of the stomach is to digest proteins it then allows the mixture of food and enzymes called chyme to enter the duodenum in order for all the other food types to be digested such as carbohydrates and fats the stomach is one of the principal organ in your digestive system