Across
- 4. carry blood away from the heart
- 6. tiny veins that connect to capillaries
- 10. where the heart is located (two words)
- 11. blood travels here to pick up oxygen and drop off waste products
- 12. the major organ of the cardiovascular system
Down
- 1. the heart is divided into four of these
- 2. carry blood to the heart
- 3. smaller top chambers of the heart
- 5. larger bottom chambers of the heart
- 6. prevent backflow of blood
- 7. carries oxygen and nutrients to the cell
- 8. the heart sits behind this
- 9. tiny vessels where gas exchange occurs and also serve as the transition point for arteries and veins