Across
- 2. color of the blood
- 6. which side of the heart the oxygen-poor blood enters?
- 8. contraction of the heart
- 11. record used to detect electrical changes in heart muscle
- 13. In veins or the heart, there's a special part that acts like a door, letting blood go only one way.
- 15. smallest vessels
Down
- 1. beat of the heart
- 3. relaxation of the heart
- 4. supply blood to the neck and head
- 5. small artery
- 7. separated partitions of the heart (plural)
- 9. arteries carry deoxygenated blood away from the heart
- 10. Abnormal swishing sound
- 12. responsible for returning the blood to the heart
- 14. tip of the heart