the respiratory system

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Across
  1. 1. what muscle plays a key role in the process of breathing?
  2. 3. what is the name of the organ responsible for gas exchange in the respiratory system?
  3. 5. what is the name os the small air sacs in the lungs where gas exchange occurs?
  4. 7. what is the name os the medical condition in which the walls of the bronchial tubes become inflamed and narrow?
  5. 9. what is the name of the medical condition in which the bronchial tubes become inflamed and produce excessive mucus?
  6. 10. what is the name os the process by which air enters the lungs?
Down
  1. 2. what is the name of the medical condition in which the lungs become inflamed and filled with fluid, making it difficult to breathe?
  2. 4. what is the name of the thin, moist membrane that lines the inside of the lungs and chest cavity?
  3. 6. what is the name of the process by which air leaves the lungs?
  4. 8. which part of the respiratory system is also known as the windpipe?