Across
- 2. Heart beat
- 3. Largest artery
- 4. One of two upper chambers of the heart
- 5. Inadequate oxygen in tissues
- 8. Listening to sounds within the body
- 10. Temporarily closes an opening so that blood flows in only one direction
- 12. Double-layered membrane surrounding the heart.
- 13. Muscular middle layer of the heart.
- 14. Improper closure of the heart valves
- 15. Small vein.
Down
- 1. Trainedin opening veins for phlebotomy
- 3. Smaller branches of arteries
- 6. Smallest type of blood vessel
- 7. An extreme form of hypoxia
- 9. Bluish discoloration of the skin
- 11. Inner lining of the heart.