Air Force Bases. Originally, the Air Force started out as a smaller specialized unit within the Army. Post World War II, in 1947 the Air Force was established as an individual branch of the Military. The Air Force today maintains a commitment to keeping global vigilance, reach and power.
On top of harnessing the substances we consume, the digestive system is also responsible for excreting waste from the body. Metabolism is the process that your body uses to convert the food and drink that you consume into energy.
Absorption occurs in the digestive system when the nutrients move from the gastrointestinal tract to the blood or lymph. Defecation is the process of expelling what the body couldn't use.lmost all absorption occurs in the small intestine. The stomach simply uses its enzymes to break down food into smaller and smaller molecules. The most mech â¦ anical digestion occurs in the stomach due to the constant churning motion. 2 people found this useful.