CVD Crossword

2. the main artery of the body that supplies oxygenated blood to the circulatory system
4. flaps that act as inlets and outlets for blood coming and leaving the ventricle
7. abnormally high blood pressure
10. responsible for initiating the heartbeat
13. spongy, air-filled organs located on either side of the chest
14. transport oxyenated blood to the heart muscle
15. valve with two cusps situated between the left atrium and left ventricle
17. remove oxygen from
20. carrying blood from the right ventricle of the heart to the lungs for oxygen
21. become or make greater in size
22. a colorless and odorless gas
23. opens when blood flows from the right atrium to the right ventricle

1. a small branch of an artery leading into capillaries
2. blood circulating from the heart to all parts of the body
3. a hollow part in an organ
5. supplied with oxygen
6. done without will or conscious control
8. fine blood vessels that form a network between arterioles and venules
9. carrying oxygen-depleted blood toward the heart
11. the two upper cavities of the heart from which blood is passed to the ventricles
12. severe pain caused by inadequate blood supply to the heart
16. make or become smaller in size
18. a large vein carrying deoxygenated blood into the heart
19. a very small vein that collects blood from the capillaries