Circulatory System

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Across
  1. 2. Branching vessels that deviler blood throughout the body
  2. 3. Cells that carry oxygen throughout the body
  3. 5. Piece of cytoplasm that is released into the bloodstream
  4. 8. Small vessels that deviler blood
  5. 11. Organ composed of mostly muscles; has an involuntary function
Down
  1. 1. Cells that fend off microorganisms and particles
  2. 2. Flaps of connective tissue
  3. 4. Internal wall between two segments of the heart
  4. 6. Upper chamber of the heart that receives and holds blood
  5. 7. Lower chamber that pumps out blood from the heart
  6. 9. Controls consistent wave of muscle contraction
  7. 10. Blood vessels that moves blood from the HEART throughout the body