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Diffusion Of Mammal's Respiratory System

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Mammals use a ventilation system to carry out gas exchange. Diffusion of the respiratory gases occurs because the body needs to get rid of the carbon dioxide (a product of cell respiration) through exhalation and needs to absorb oxygen as oxygen is vital for cell respiration to make ATP. Oxygen in the air is ventilated into the body by inhalation (moving air from the atmosphere into the lungs) through either the mouth or he nasal cavity, after which it travels down the trachea (throat) towards the lungs. The first thing the air comes in contract with is the bronchi, which are The airways of the lungs, after a person takes in a breath of air, the air travels through the nose or mouth, down into the trachea, The trachea then divides two main

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