State what is meant by the term metabolic.

Metabolism is the term for chemical reactions that occur in the cells of living organisms . The metabolic process help humans grow and sustain.It is also often said that the higher the metabolism the healthier is the person.

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when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.