Across
- 3. Two bottom chambers of the heart.
- 4. Does not have a fixed shape, but does have a nucleus.
- 6. A thin membrane that lines the inside of the heart.
- 8. Two upper chambers of the heart.
- 9. Has a wall made of a single layer of cell.
- 10. Chambers present in the heart.
- 11. Carries blood away from the heart.
Down
- 1. A wall of tissue the separates the left and right side of the heart.
- 2. Carries blood towards the heart.
- 5. Flat discs that do not contain nuclei.
- 7. Circulates in blood vessels.
- 8. The biggest artery in the heart.