Respiratory System

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Across
  1. 5. Rounded sacs with very thin walls in wich the gas exchange happens.
  2. 7. Gas obtained by the respiratory system, needed for the cells.
  3. 8. Process by which happens the gas exchange due to difference in concentrations.
  4. 12. As they vibrate, the voice is produced.
  5. 15. Set of tubes of the respiratory system that leads to the lungs.
Down
  1. 1. Thin passages that end in rounded sacs called pulmonary alveoli.
  2. 2. System that moistens, warms and cleanses the entering air
  3. 3. Flexible tube that directs the air from the larynx to the bronchi.
  4. 4. Waste product of cellular respiration, expelled by the respiratory system.
  5. 6. Spongy organs located in the thoracic cavity on either side of the heart.
  6. 9. This organ is part of both the digestive and respiratory systems.
  7. 10. Membrane that surrounds the lungs.
  8. 11. Two tubes that branch our from the trachea into each lung.
  9. 13. Short tube made of cartilage, the vocal chords are here.
  10. 14. Parts into which the lungs are divided.