science

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Across
  1. 2. basic unit of life
  2. 4. collection of tissue specialized for one thing
  3. 6. lead from bronchi to alveoli
  4. 9. where digestion begins
  5. 10. takes blood to the heart
  6. 11. where veins and arteries meet
  7. 15. tube from the mouth to the stomach
Down
  1. 1. lower chamber of the heart
  2. 3. located in the small intestine and where digested food absorption takes place
  3. 5. takes blood away from the heart
  4. 7. where most food absorption takes place
  5. 8. upper chamber of the heart
  6. 12. collection of cells that do the same things
  7. 13. large muscular sac that continues digestion
  8. 14. liquid part of the blood