Cardiovascular System

3. carries oxygen-poor blood from the lower body areas to the right side of the heart
5. valve activity that fills and relaces the ventricles and the atria
7. a flap thats in between left ventricle and left atrium to ensure correct blood flow
8. lowest blood pressure
10. an organ that pumps blood throughout the body
16. makes sure blood flows from the heart to the lungs
17. sound you hear first due to closing of the atrioventricular valves
18. makes sure that oxygen-rich blood doesn't flow back into the left ventricle
19. close and open to allow blood flow in one direction through the heart
20. blood goes through rest of body and heart
24. circulates from the left atrium and to the body

1. makes sure blood flows from lungs to heart
2. atrium the atrium that receives blood from the lungs
4. sends the signal through this node the from SA node to the lower heart chambers which contracts them
6. atrium the atrium that receives blood from the rest of the body
9. a sac that is full of fluid that provides protection for the heart
11. circulation blood goes through lungs and heart only
12. sends electrical signals that contracts the upper heart chambers
13. sound you hear after dub due to closing of the pulmonary valves and aortic valves
14. largest vein in the body
15. valve activity that empties and contracts the ventricles and the atria
20. carries oxygen-poor blood from the upper body areas to the right side of the heart
21. circulates from the systemic circulation into the right atrium
22. manages oxygen-poor blood to reach the lungs
23. right av valve