Cardiovascular System

2. The surface veins on your wrist give this blood a blue hue. It's actually just a darker red color.
3. The outer layer of the heart wall but the inner layer of the pericardium.
5. The thin lining of the heart chambers and valves.
8. Chambers that receive blood from the veins.
11. The barrier wall between chambers that prevents mixing of oxygenated and deoxygenated blood.
12. An inherited disease where there aren't enough healthy red blood cells to carry oxygen throughout your body.
15. Valve located between your left atrium and left ventricle.
17. Commonly known as a heart attack, this infarction occurs when blood flow to the heart is blocked.
19. Blood is pumped from your left ventricle into the largest artery in your body via what valve?

1. Arteries carry this blood from the heart to all over the body.
4. The protective sac that surrounds your heart, keeping it lubricated and in place.
6. Of the two types of circulation, this type sends red blood from the heart to all areas of the body.
7. The valve that allows blood to flow from your right atrium to the right ventricle.
9. Also known as high blood pressure.
10. When the heart has stopped pumping effectively.
13. A cancer that usually begins in the bone marrow and results in high numbers of abnormal blood cells.
14. Of the two types of circulation, this one moves blood to the lungs to release carbon dioxide.
16. This condition occurs when the number of red blood cells circulating in the body decreases.
18. Chambers that pump blood.