Respiratory System

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Across
  1. 4. The windpipe; a tube that carries air from the larynx to the lungs.
  2. 5. The main organs of the respiratory system where gas exchange occurs.
  3. 7. The act of breathing in air, also known as inspiration.
  4. 10. A gas that is essential for the respiration of all living organisms.
  5. 11. A cellular process that takes place to create chemical energy from oxygen and glucose.
  6. 12. The voice box; a structure in the throat that contains the vocal cords.
Down
  1. 1. A waste gas produced by cellular respiration that must be removed from the body.
  2. 2. Small, branching airways within the lungs that connect the bronchi to the alveoli.
  3. 3. The act of breathing out air, also known as expiration.
  4. 6. One of the two main branches that diverges from the trachea.
  5. 8. Tiny air sacs in the lungs where gas exchange takes place.
  6. 9. A dome-shaped muscle that separates the chest cavity from the abdominal cavity and aids in breathing.