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Respiratory System

Respiratory System

THE RESPIRATORY SYSTEM

INTRODUCTION 
	Day-in and Day-out, with out the prompt of conscious thought, the respiratory system carries out its life-sustaining activities. If the respiratory system’s responsibilities are interrupted for more than a few minutes, serious, permanent damage to tissues occurs, Followed by the break down of all the body’s systems in the human body. While the intake of oxygen and removal of carbon dioxide are the primary functions of the respiratory system, it plays other important roles in the body. It protects the body against disease-causing organisms and contaminated substance inhaled with air. The respiratory system also houses the cells that detect smell, and assists in the production of sounds for speech.
	The Respiratory and Circulatory systems work together to deliver oxygen to cells and remove carbon dioxide in a two-phase process called respiration. The first phase
Of respiration begins with breathing in, or inhalation. Inhalation brings air from outside the body into the lungs. Oxygen in the air moves from the lungs through blood vessels to the heart, which pumps the oxygen-rich blood to all the parts of the body. Oxygen then moves from the bloodstream into cells, which completes the first phase of respiration. The second phase of respiration

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