Across
- 2. sends electrical signals that contracts the upper heart chambers
- 5. carries oxygen-poor blood from the upper body areas to the right side of the heart
- 7. a flap thats in between left ventricle and left atrium to ensure correct blood flow
- 13. circulates from the systemic circulation into the right atrium
- 16. blood goes through rest of body and heart
- 20. the atrium that receives blood from the rest of the body
- 21. valve activity that fills and relaces the ventricles and the atria
- 22. the heart wall that is in the middle that is made up of cardia muscle
- 23. the outermost later that covers the heart and filled with pericardial fluid
- 24. sends the signal through this node the from SA node to the lower heart chambers which contracts them
- 25. part of the heart that has the lowest blood pressure
- 26. carries oxygen-poor blood from the lower body areas to the right side of the heart
Down
- 1. makes sure that oxygen-rich blood doesn't flow back into the left ventricle
- 3. an organ that pumps blood throughout the body
- 4. the atrium that receives blood from the lungs
- 6. circulates from the left atrium and to the body
- 8. close and open to allow blood flow in one direction through the heart
- 9. do most of the pumping of the heart
- 10. valve activity that empties and contracts the ventricles and the atria
- 11. the heart wall that is in between each chamber and is a thin layer of endothelial cells
- 12. circulation blood goes through lungs and heart only
- 14. a sac that is full of fluid that provides protection for the heart
- 15. makes sure blood flows from the heart to the lungs
- 17. makes sure blood flows from lungs to heart
- 18. right av valve
- 19. manages oxygen-poor blood to reach the lungs
- 25. largest vein in the body