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