Jedi Class

3. / inner lining of the heart
6. / a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation.
11. / layered membrane surrounding the heart
12. valve / valve positioned between between the right ventricle and the pulmonary artery
13. / one of two lower chambers of the heart
14. / smallest blood vessel. Materials pass to and from the bloodstream through the thin capillary walls
17. / muscular, middle layer of the heart
18. / instrument to measure blood pressure
20. / largest type of blood vessel; carries blood away from the heart to all parts of the body

1. circulation / flow of blood from the heart to the lungs and back to the heart
2. / beat of the heart as felt through the walls of the arteries
4. / small vein
5. / thin-walled vessel that carries blood from body tissues and lungs back to the heart. Veins contain valves to prevent backflow of blood
7. / innermost lining of the blood vessels
8. / A sac-like protrusion from a blood vessel or the heart, resulting from a weakening of the vessel wall or heart muscle
9. / largest artery in the body
10. / An x-ray technique in which dye is injected into the chambers of your heart or the arteries that lead to your heart
15. vein / one of two pairs of vessels carrying oxygenated blood from the lungs to the left atrium of the heart
16. / abnormal swishing sound caused by improper closure of the heart valves
19. artery / artery carrying oxygen-poor blood from the heart to the lungs