Medical Dictionary. brachial plexus. noun. Medical Definition of brachial plexus. : a complex network of nerves that is formed chiefly by the lower four cervical nerves and the first thoracic nerve, lies partly within the axilla, and supplies nerves to the chest, shoulder, and arm.
Nonrenewable Sources of Energy. Most of the energy we use comes from fossil fuels, such as coal, natural gas and petroleum. Uranium is another nonrenewable source, but it is not a fossil fuel.Uranium is converted to a fuel and used in nuclear power plants.Once these natural resources are used up, they are gone forever.nergy is the power we use for transportation, for heat and light in our homes and for the manufacture of all kinds of products. There are two sources of energy: renewable and nonrenewable energy.
Fats: The Long-Burning Fuel. While carbs are the kindling to stoke the energy furnace, fat is like the slow-burning log your body uses for prolonged cardiovascular exercise. Unlike carbs, fat metabolism needs oxygen to convert into energy.The amount of fat used for fuel, which is in the usable form of triglycerides, depends on duration and exercise intensity. At low-intensity exercise, fat is the primary fuel source.ats: The Long-Burning Fuel. While carbs are the kindling to stoke the energy furnace, fat is like the slow-burning log your body uses for prolonged cardiovascular exercise. Unlike carbs, fat metabolism needs oxygen to convert into energy.