Across
- 5. The main large artery of the heart
- 6. Proteins in the blood that act as identification markers
- 7. Proteins in the blood that mark foreign proteins for the immune system
- 9. System of the body that includes the heart and blood vessels
- 11. Blood vessels that lead blood to the heart
Down
- 1. A classification of blood based on the presence/absence of antigens
- 2. Main large veins of the heart
- 3. Two chambers of the inferior region of the heart
- 4. The main organ in the cardiovascular system
- 5. Two chambers of the superior region of the heart
- 8. Organ of the body where blood receives oxygen
- 10. Blood vessels that lead blood away from the heart