Across
- 2. / The main organ of the system.
- 3. / Arteries lead to __.
- 4. / Chamber of the heart.
- 5. / Main artery to the body.
- 6. / Veins bring blood into an upper __.
- 8. / Travel in the blood bringing things to and from the body cells.
- 10. / The heart constantly __ blood throughout the body.
- 11. / From an atrium blood flows through a valve called __.
Down
- 1. / Circulatory and __ system work together.
- 3. / Responsible for circulatory.
- 5. / Carry blood away from the heart.
- 7. / Blood vessel that carries blood back to the heart.
- 9. / Is pumped out of the ventricle through an artery.