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.
We often blame metabolism for these two phenomena. Yet the concept of metabolism is one that is poorly understood by many. In this lesson we'll discuss the processes involved in metabolism and what it means for health and well-being. Metabolism is defined as the sum of all of the chemical reactions within the body. This includes any chemical process by which a substance is broken down, produced, or chemically modified. Metabolism is often described in terms of food and nutrient use within the body, primarily because it is simpler to understand.