Across
- 3. carried to the heart
- 5. exchange gases to remove carbon dioxide and add oxygen to blood
- 6. a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in human
- 9. includes the heart and blood vessels
Down
- 1. carry blood and nutrients to the heart and throughout the body
- 2. organ that pumps blood
- 3. connect arteries and veins
- 4. carried away from the heart
- 7. controls the direction of blood flow
- 8. carry blood and nutrients away from the heart and throughout the body