CIRCULATION:)

3. What part of the heart receives oxygenated blood from the pulmonary veins?
7. What is the part of the circulatory system that nourishes the heart?
8. Which blood vessels supply the kidneys?
10. What is the large vein that returns blood from the legs and abdomen to the heart?
12. When arteries deliver oxygen to the tissues, they also … waste
13. What is the name of the blood vessels that connect veins to capillaries?
15. What do you call a valve that looks like a bishop’s hat
17. Capillaries have really thin walls and because of that oxygen can … from the blood into the body’s cells
18. One of the four chambers of the heart. It pumps blood low in oxygen to the lungs
19. The multicellular organismal process in which the heart decreases in volume in a characteristic way to propel blood through the body?

1. The capillaries … into bigger vessels
2. The muscular tissue of the heart
4. The part of the aorta that extends downward from the aortic arch
5. Arteries …… into arterioles
6. The smallest blood vessels inside of the lungs, attached to the walls of the alveoli
9. Large, significant vein responsible for returning deoxygenated blood collected from the upper body to the right atrium
11. What is a flap of tissue that controls the flow of blood out of the left ventricle of the heart to the body's main artery?
14. What is the largest artery in the body?
16. Right atrioventricular valve
20. Which blood vessels return deoxygenated blood from the myocardium to the right atrium?