M1: Role Of Energy In The Body

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M1: Discuss the role of energy in the body The best way to describe energy is to describe what it does. Energy is the ability to do work or cause movement. Common forms of energy in our world include heat, light, electrical energy, sound, mechanical energy, and chemical energy. Most metabolic processes in the body use chemical energy, which is held in the bonds between the atoms of molecules and is released when these bonds are broken. “The muscles are no different. When muscles work, they require energy so that they can contract. The unique feature about muscular contraction is that the chemical energy is transformed into mechanical energy – movement.” (http://www.nsbri.org/humanphysspace/focus5/epenergetics.html/20/11/2011/) Although extended…show more content…
This happens through the transfer of fuel from oxygen that is transported to the muscle through the bloodstream. The most important fuel for all muscle contraction is adenosine triphosphate (ATP). “There are three main ways that energy is transported to the muscle and they are derived through the use of a timing or intensity.” (http://www.trulyhuge.com/muscle_fuel_energy.html). How hard and how quickly the muscle to contract will determine which fuel source is needed. Phosphagen is primarily used for 10 – 20 seconds, glycolysis for up to a minute, and oxidative is the primary system for all long-term exercise. For the most part, each system uses a different fuel and is specific to the relative intensity of the exercise session, with phosphagen being high intensity, glycolysis being moderate intensity, and oxidative being low…show more content…
The chemical produced by the digestive system that breakdown foods are called enzymes. One of the main substances required for energy and resulting from the digestion is glucose. This is stored as glycogen by the liver and is released back into the circulation as glucose when required. The pancreas produces insulin which plays a role regulating blood glucose levels. Glucose is important because it is an energy molecule that is broken down to give the cell ATP energy to use for the cell’s

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