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1. The lungs are located in the chest.2. The space between the ribs is occupied intercostals.3. Diaphragm separates the chest from the abdomen.4. The air that we breathe in through the nose or mouth, passes through 5. respiratory pathways in the lungs.6. In the alveoli gases are exchanged between the organism and the Wednesday.7. The length of the trachea is approximately 15 cm.8. Each bronchus enters the lung, where branching into smaller bronchi and Bronchioles.9. There are a total of about 300 million alveoli.10. The alveoli with capillaries.11. the alveoli Walls are very thin.12. Through the thin wall and gas exchange occurs
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