Circulatory, Digestive, & Respiratory System Interactions

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Across
  1. 5. body system that breaks down food
  2. 6. main large organ of respiratory system
  3. 9. multiple cells working together
  4. 10. Blood vessel (tube) that carry blood back to the heart
  5. 11. small finger-like projection in the small intestine that absorbs nutrients into the blood
  6. 12. last name of our VERY MUCH ALIVE classroom "pet"
  7. 13. The waste product exhaled from the lungs during breathing (two words, no space)
  8. 17. human blood is ALWAYS this color
  9. 18. Blood vessel (tube) that carry blood away from the heart
  10. 19. A gas that we breathe in to stay alive, and is carried in red blood cells
  11. 20. This organ pumps blood throughout the body
Down
  1. 1. body system that moves blood around the body
  2. 2. body system that gets gases into/out of body
  3. 3. Small air sacs in the lungs where gas exchange happens
  4. 4. Tiny blood vessel that allows oxygen and nutrients to pass to cells
  5. 7. smallest functional unit of an organism
  6. 8. parts that work together
  7. 14. a living thing
  8. 15. The process by which food is broken down in the mouth, stomach,and intestines
  9. 16. The muscle that helps us breathe by contracting and expanding the chest