Science review

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Across
  1. 1. Place where substances are exchanged betwee
  2. 3. Take up oxygen in the blood and deliver it to cells elsewhere in the body.
  3. 4. Stated that all cells come from preexisting cells (last name).
  4. 5. The liquid part of blood.
  5. 6. Blood vessels that carry blood away from the heart.
  6. 8. Blood vessels that carry blood back to the heart.
  7. 10. The body's disease fighters.
  8. 12. Hollow, muscular organ that pumps blood throughout the body.
  9. 13. Said that all plants are made of cells.
  10. 14. Flaps of tissue that prevent blood from flowing backward.
Down
  1. 1. Consists of the heart, blood vessels, and blood.
  2. 2. Part of blood that is responsible for clotting.
  3. 7. blood and body cells.
  4. 9. Discovered that all animals were composed of cells (last name).
  5. 11. First person to see bacteria from dental scraping called the small organisms that he saw animalcules (last name only).