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Respiratory system

21/07/2014 19:11:00
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Introduction: Respiratory system constitutes one of the important system as it contributes the vital provision of supply of oxygen to the body, where cells continuously use oxygen for metabolic reactions which in turn releases energy.
This energy is from the nutrient molecules which provide ATP.
DEFINITION:- Respiration is the process by which oxygen from the lungs is carried by the blood to the tissues and carbon dioxide formed in the tissues by metabolic activity is carried by the blood to the lungs and is expired out The PROCESS OF RESPIRATION involves four stages:-

 

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