Circulatory / Respiratory

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Across
  1. 1. Voice box; located between the pharynx and trachea.
  2. 4. First organ in the respiratory tract; filters, warms, and moistens air.
  3. 5. Tiny blood vessels where oxygen and nutrients pass into tissues.
  4. 8. Muscle that helps expand the chest for breathing.
  5. 9. Blood vessel that carries blood away from the heart.
  6. 11. Smaller branches of the bronchi that lead to alveoli.
Down
  1. 1. Pair of organs where gas exchange takes place.
  2. 2. System responsible for gas exchange in the body.
  3. 3. Blood vessel that carries blood back to the heart.
  4. 6. Shared pathway for food and air, also called the throat.
  5. 7. Muscular organ that pumps blood through the circulatory system.
  6. 10. Windpipe; connects the larynx to the bronchi.