Across
- 5. The two top chambers of the heart
- 7. Thin inner layer of flattened squamous epithelial cells
- 9. Little arteries
- 11. Transport blood away from the heart
- 13. Ballooning of the artery wall.
- 14. Permanent swelling veins that look twisted or bumpy
- 15. Period of contraction
- 16. Blood pressure higher than normal
Down
- 1. Fibrous sac around the heart
- 2. Small veins
- 3. Smallest blood vessel
- 4. Hollow interior of the vessel
- 6. The largest artery in the body
- 8. The two bottom chambers of the heart
- 10. Period of relaxation
- 12. A band of smooth muscle