Reference no: EM132153078

Circulatory System Worksheet & Study Guide

1.What consists of the heart, blood vessels, & blood?

2. What is the muscular hollow organ often called the "pump" of the body?

3. How big is the heart?

4. What cavity is the heart located in?

5. What are the 3 layers of tissue that form the heart?

6.The muscular layer of the heart is the ?

7. The smooth layer of cells that lines the inside of the heart & is continuous with the inside of blood vessels?

8. What is the double-layered membrane, or sac, that covers the outside of the heart.

9. A muscular wall that separates the heart into a right & left side, prevents blood from moving between the right & left sides of the
heart is the______?

10. The upper part of the septum is called the_____?

11. The lower part of the septum is called the____?

12. The heart is divided into 4 parts or chambers. The upper chambers are called the___________?

13. The lower chambers are called the____________?

14. Which part of the heart receives blood as it returns from body cells_______.

15. Which part of the heart receives blood from the right atrium & pumps the blood into the pulmonary artery?

16. Which part of the heart receives oxygenated blood from the lungs?

17. Which part of the heart receives blood from the left atrium & pumps the blood into the aorta for transport to the body cells_____?

18. What keeps the blood flowing in the right direction?

19. This heart valve is located between the right atrium & the right ventricle?

20. This valve is located between the right ventricle & the pulmonary artery & carries blood to the lungs.

21. This valve is located between the left atrium & left ventricle.

22. This valve is located between the left ventricle & the aorta____?

23. The largest artery in the body is the______?

24. The only artery in the body which carries unoxygenated blood_____?

25. The cardiac cycle consists of a brief period of rest called______?

26. The cardiac cycle in which the ventricles contract__________?

27. The blood in the ______side of the heart is low in___________ and high in _____________?

28. What blood vessels bring the blood from the lungs to the left side of the heart_______?

29. These are a group of nerve cells located in the right atrium which send out an electrical impulse that spreads out over the muscles in the atria______?

30. After the electrical impulse passes through the atria it reaches the___________, a group of nerve cells located between the atria &
ventricles.

31. To where does the AV node send the electrical impulse________?

32. The bundle of His divides into a_________and ________which carry the impulse down through the ventricles.

33. The bundle branches further subdivide into the ___________, a network of nerve fibers throughout the ventricles.34. The electrical conduction pattern occurs approximately every______seconds.

35. The movement of the electrical impulse can be record on an________ & used to detect abnormal activity or disease.

36. Are abnormal heart rhythms and can be mild to life- threatening_____?

37. An early contraction of the atria is called__________?

38. A condition in which the ventricles contract at random without coordination & decreases or eliminates blood output is
called________?
39. What can be used to diagnose arrhythmias_______&__________?

40. What is the device that shocks the heart with an electrical current to stop the uncoordinated contractions & allow the SA node to regain control?______________________

41. A small battery-powered device with electrodes to regulate the heart's rhythm is a ?______________

42. Which kind of pacemakers deliver electrical impulses at a predetermined rate?_________

43. Which type of pacemaker is the most common & deliver electrical impulses only when the heart's own conduction system is not responding correctly.__________________

44. Most manufactures still recommend that people with pacemakers avoid close contact with___________ &______________?

45. What are the 3 main types of blood vessels?1._________ 2._____________3._______________

46. These blood vessels carry blood away from the heart_________.

47. The largest artery in the body is the______?

48. The smallest branches of arteries are called_______?

49. Arterioles join with which blood vessels_____?

50. Which blood vessels are more elastic because they receive the blood as it is pumped from the heart.____________

51. Which blood vessels connect arterioles with venules____?

52. How many layers of cells do capillaries have?__________

53. The smallest branches of veins, which connect with capillaries________?

54. What are the 2 largest veins?____________,______________

55. The blood vessels which brings the blood from the upper part of the body to the right atrium is the_____?