Across
- 3. Lower chambers of the heart
- 4. Pressure exerted by blood on blood vessel walls
- 6. An iron containing protein found in blood
- 7. Connective tissue made of plasma, blood cells, and platelets
- 8. The liquid part of blood
- 9. Upper chamber of the heart
- 10. Blood vessels that carry blood back to the heart
Down
- 1. Inflammation of the lungs
- 2. Blood vessels that carry blood away from the heart
- 5. The main organs of the respiratory system