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The human body carries out its main functions byconsuming food and turning it into usable energy. Immediate energy is supplied to the body in the form of adenosine triphosphate (ATP). Since ATP is the primary source of energy for every body function,other stored energy is used to replenish ATP.

People also ask


  • How is energy used up in the body?

  • The body energy is mostly used up due to smooth muscle contractions in the gut, blood vessels, lungs. The cardiac muscle in the heart is even more active and high energy is demanding.

  • How do the body’s three energy systems work together?

  • The body uses 3 different systems to supply cells with the necessary ATP to fuel energy needs. Most of the body’s activities use a continuum of all three energy systems, working together to ensure a constant supply of energy. This amazing kale pesto is only 210 calories and anti-oxidant rich!

  • How is energy supplied to muscle cells in the body?

  • Energy is supplied to all cells including muscle cells by ATP generated from carbohydrates, fats and proteins .The unit of energy in the cells is called ATP (Adenosine Triphosphate) The body have 4 methods to create ATP, they vary by speed and whether they burn oxygen or not. These are listed 1-4 below;

  • How does the human body use oxygen to make energy?

  • Simply put the cell uses oxygen to burn glucose and make ATP i.e. aerobic production of energy by the oxygen system. Your muscles need a steady supply of ATP during any sustained activity. This is lower power, but you have a virtually endless supply available depending on your aerobic fitness levels.

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