Across
- 5. brings blood into the heart from upper parts of body
- 6. upper chamber of the heart
- 7. inner lining of blood vessels
- 8. blood flow from the heart to body tissues then back
- 9. contraction phase of the heartbeat
- 10. abnormal swishing sound
- 13. inner lining of the heart
- 14. slow heartbeat
Down
- 1. gas released by cells then exhaled from lungs
- 2. lower chamber of the heart
- 3. carries oxygen-poor blood to the lungs from the heart
- 4. thin, delicate vessels
- 11. valve between left atrium and left ventricle
- 12. beat of the heart
- 14. the color blood appears in veins from outside