Human Body Systems

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Across
  1. 3. The frame of the body.
  2. 5. Pumps oxygen-rich blood throughout the body.
  3. 7. Controls the body, allowing a person to think and feel.
  4. 9. Defends the body against infection and viruses.
  5. 10. I am a major organ of the respiratory system. I am filled with tiny blood vessels called capillaries! (Singular)
  6. 11. I am a major organ of the cardiovascular system. I am about the size of your fist!
  7. 12. I am a major organ of the nervous system. I can send messages at more than 150 miles per hour!
Down
  1. 1. Processes nutrients from food.
  2. 2. I am a major organ of the digestive system. I have an acid-containing liquid in me, but it doesn’t burn because of my thick mucous layer!
  3. 4. I am a major organ of the immune system. I am also the largest organ of the human body!
  4. 6. Provides oxygen to the bloodstream.
  5. 8. The strength and power of the body, which provides movement and stability.