Human Body Systems

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Across
  1. 3. A blood vessel that conducts blood away from the heart
  2. 5. The main external opening for the respiratory system
  3. 9. Supply body with oxygen and removes carbon dioxide
  4. 10. The smallest type of blood vessel
  5. 13. A blood vessel that carries blood from the heart to tissues and organs in the body
  6. 14. The airway that leads from the larynx to the bronchi
  7. 15. Through which food and air enter the body
Down
  1. 1. One pair of organs in the Abdomen
  2. 2. Tubes that carry urine from each kidney to the urinary bladder
  3. 4. A large airway that leads from the trachea to a lung
  4. 6. The tube where urine leaves
  5. 7. Organs that store urine
  6. 8. The thin muscle below the lungs and heart that separates the chest from the abdomen
  7. 11. Tiny air sacs at the end of the bronchioles
  8. 12. A fist-sized organ that pumps blood throughout your body