is breathing a chemical reaction

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  • Is respiration a physical or chemical process?

  • When you hear the word ‘respire,’ you probably think of breathing. When you breathe, you are taking in oxygen with each inhale and releasing carbon dioxide with each exhale. This gas exchange is important for respiration, but while breathing is a physical process, respiration can be thought of as more of a chemical process.

  • How do chemical changes in the body affect respiration?

  • Chemical Control of Respiration. In regulating breathing, central nervous mechanism integrate information about a large number of physical, chemical and nervous variables. The chemical changes in arterial blood involving its PCO 2, PO 2 and pH have a profound effect upon respiration.

  • How does breathing work in the human body?

  • Breathing is central to life, as it allows the human body to obtain the energy it needs to sustain itself and its activities. But how does it work? Breathing uses chemical and mechanical processes to bring oxygen to every cell of the body and to get rid of carbon dioxide. Our body needs oxygen to obtain energy to fuel all our living processes.

  • What happens to oxygen and carbon dioxide when we breathe in?

  • As we breathe in, oxygen enters the lungs and diffuses into the blood. It is taken to the heart and pumped into the cells. At the same time, the carbon dioxide waste from the breakdown of sugars in the cells of the body diffuses into the blood and then diffuses from the blood into the lungs and is expelled as we breathe out.

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