Across
- 2. A thick wall called the _______ separates the two sides of the heart.
- 6. Red blood cells are also called ________.
- 7. ______ carry blood to the heart.
- 10. In total, your heart has for rooms called ______.
- 11. _________ connect arteries and veins.
- 12. There are _____ main kinds of blood vessels.
Down
- 1. White blood cells are also called __________.
- 3. _______ carry blood away from the heart.
- 4. The downstairs rooms in the heart are called _________.
- 5. The upstairs rooms in the heart are called _____.
- 8. Heart valves are ____-way doors that keep blood flowing in the correct direction.
- 9. Your heart is about the size of your ______.