"The human respiratory system is responsible for supplying the body with oxygen and getting rid of carbon dioxide. It includes several key organs, such as the lungs, the trachea, and the diaphragm. The lungs are vital for this process, as they are the primary site where the exchange of oxygen and carbon dioxide occurs within the alveoli. Air enters through the nose or mouth, travels down the trachea before it fills the lungs, where oxygen is exchanged for carbon dioxide in tiny air sacs called alveoli. The diaphragm helps in this process by contracting and relaxing to change the pressure in the chest cavity, allowing us to breathe in and out."
"The human respiratory system is responsible for supplying the body with oxygen and getting rid of carbon dioxide. It includes several key organs, such as the lungs, the trachea, and the diaphragm. Air enters through the nose or mouth, travels down the trachea before it fills the lungs, where oxygen is exchanged for carbon dioxide in tiny air sacs called alveoli. The diaphragm helps in this process by contracting and relaxing to change the pressure in the chest cavity, allowing us to breathe in and out."
Please add a part about the lungs in this paragraph. Ensure it stays below 1-2 sentences.
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