Human respiratory system

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Across
  1. 4. The voice box, located at the top of the trache
  2. 5. These muscles, located between the ribs, aid in breathing
  3. 7. The process of breathing out
  4. 9. The dome-shaped muscle that plays a key role in breathing
  5. 10. A muscular tube that connects the nose and mouth to the trachea
  6. 11. The process of gas exchange between the lungs and the blood in the capillaries
Down
  1. 1. The main organs of the respiratory system
  2. 2. The process of breathing in
  3. 3. The tube that carries air from the larynx to the bronchi
  4. 6. Small air sacs where gas exchange occurs in the lungs
  5. 8. The smallest airways in the lungs that lead to the alveoli