1. What is the functional difference between veins and arteries?

2. The heart beat consists of two sounds, “Lub Dub” What event is responsible for making the “Lub” sound? What event is responsible for making the “Dub” sound?

3. Identify the Structure

4. What role does the autonomic nervous system play in heart rate?

5. Identify the Structure 5

7. What event does the P wave measure?

8. Identify the Heart Layer

9. When the SA node transmits a signal, which three structures are directly affected?

10. Superficially to deep, identify the three layers of the heart. 10

11. What two structures prevent the AV valves from opening into the atria?

12. Identify the Vein

13. What are the two structural differences between veins and arteries?

14. What are small arteries called?

15. Identify the Structure 15

16. Identify the Artery

18. Gas exchange occurs in what type of blood vessels?

19. Identify the Structure

20. What are small veins called? 20

21. Which part of an EKG wave represents the pathway that begins with the AV node and ends with ventricular contraction?

22. What valve separates the pulmonary trunk from the right ventricle?

23. Identify the Structure

24. What is the next structure in this sequence? Lungs  Left Atrium 

25. What is the name of the cardiac/nervous tissue causes the ventricles to contract? 25

26. Identify the Structure

27. Identify the Vein

28. Identify the Structure

29. Identify the Vein

30. Identify the Artery 30

31. Identify the Structure

34. Identify the Artery

35. Identify the Vein 35