Across
- 5. The organ system that exhales carbon dioxide and inhales oxygen.
- 7. A type of blood cell that carries oxygen to organs
- 9. liquid that the organism floats in; mainly water.
- 11. The main part of the respiratory system that oxygenates blood for the organism.
- 12. The organ system that circulates blood throughout the body.
Down
- 1. A type of cell that fights off foreign invaders in the bloodstream
- 2. A blood vessel that carries oxygenated blood away from the heart and throughout the body.
- 3. A blood vessel that carries deoxygenated blood to the lungs.
- 4. Organ made up of muscle tissue that pumps blood throughout the body.
- 6. One of the two upper chambers in your heart.
- 8. Connects the body's organs to the arteries and veins.
- 9. Part of a cell that stops blood loss by creating blood clots.
- 10. One of the two lower chambers in your heart.