Assignment -

Read Chapter - The Cardiovascular System The Heart and Blood Vessels and answer the following questions.

1. What are the major components of the cardiovascular system?

2. What are the functions of the cardiovascular system?

3. Explain how the lymphatic system interacts with the cardiovascular system.

4. Describe each of the three different kinds of blood vessels.

5. Why is the structure of arteries and veins so different? How do their structures fit their functions?

6. What is the purpose of precapillary sphincters?

7. Describe the flow of blood through the heart. (beginning with blood entering the heart from the body, & include flow to and from the lungs)

8. Explain what causes the "lub-dub" sounds of the heart.

9. What is the difference between systole and diastole?

10. What do the SA and AV nodes do and where is each located?

11. Describe the structure of the heart including the septum and pericardium.

12. Contrast the pressure of blood flow in the veins, arteries and capillaries.

13. What is the function of valves in the heart and the veins?

14. Describe the flow of blood in the pulmonary circuit.

15. Arteries are often colored red indicating that they are carrying oxygen and veins are often colored blue indicating they are oxygen-depleted. Using this coloring system, are there any arteries that would be colored blue or veins that would be colored red? Which ones and why?

16. Summarize three cardiovascular disorders that are common in humans.

17. Summarize three different treatments that are available for cardiovascular disorders.

18. Discuss why Cardiovascular disease is the leading source of death in Western countries. OR discuss what can be done to prevent cardiovascular disease in our lives.

Total words: 1000.