Across
- 5. Valve positioned between the right ventricle and the pulmonary artery
- 8. Relaxation phase of the heartbeat.
- 9. Hallow muscular organ that pumps the blood through the circulatory system
- 10. Double-layered membrane surrounding the heart.
- 11. Small artery.
- 13. A large vein that carries blood to the heart from other areas of the body.
- 14. Abnormal swishing sound caused by improper closure of the heart valves
Down
- 1. Carries blood from the lungs to the heart
- 2. Small veins
- 3. Largest artery in the body.
- 4. Having thinner walls compared with arteries
- 6. Muscular middle layer of the heart.
- 7. A tubular structure carrying blood through the tissues and organs; a vein, artery, or capillary
- 11. One of two upper chambers of the heart.
- 12. Fine branching blood vessels that form a network between the arterioles and venules