Anatomy 210

Front 1

Blood in the inferior vena cava will drain into the?

Back 1

Right Atrium

Front 2

2. The primary pacemaker of the heart is the?

Back 2

a. SA Node

Front 3

3. The amount of blood contained in the ventricle at the end of the atrial systole?

Back 3

the end diastolic volume

Front 4

4. Cardiac output is:

Back 4

the product of stroke volume and heart rate

Front 5

5. A patient had an EDV of 90 ml and ESV of 40 ml and a heart rate of 50 beats/min. What is this patient’s stroke volume?

Back 5

50 ml

Front 6

6. Which of the following is true of the left ventricle?

Back 6

The left ventricle has a thicker myocardium than the right ventricle

Front 7

7. Each of the cardiac valves opens and closes in response to:

Back 7

Changes in pressure

Front 8

8. Blood leaving the left atrium:

Back 8

Passes through the bicuspid valve to enter the left ventricle

Front 9

9. All of the following statements about circulation of blood are true EXCEPT:

Back 9

the aorta is part of the pulmonary circulation

Front 10

10. Blood flows from the right atrium through:

Back 10

the tricuspid valve to the right ventricle

Front 11

11. Place the following in order of the propagation of the cardiac action potential:

Back 11

a. Correct order: Purkinje fibers, SA node, Right and left bundle branches, AV bundle, AV node.

Front 12

12. The QRS complex of the ECG is associated with:

Back 12

Ventricular depolarization

Front 13

13. During the cardiac cycle, in order for blood to be ejected from the heart the pressure inside the ventricle must increase. This increase in interventricular pressure is due to:

Back 13

a. Both A and B are correct: Increase in ventricular volume, and Ventricular contraction

Front 14

14. Heart sounds are the results of cardiac valves closing and causing:

Back 14

Turbulent flow

Front 15

15. Which of the following correctly describes how stroke volume is regulated?

Back 15

a. (ALL ARE CORRECT) By adjusting the preload, or degree of stretch on the heart before it contracts…by adjusting contractility or strength of contraction of the heart at a given preload…by adjusting the afterload, the pressure that must be overcome to open an SL valve…

Front 16

16. The Frank-Starling law of heart states:

Back 16

a. That the right and left ventricles must pump equal amount of blood with each heartbeat.

Front 17

17. Which of the following is NOT true of regulation of the heart?

Back 17

a. The brain cannot modulate heart rate.

Front 18

18. Which equation is correct?

Back 18

a. NFP= (BHP + IFOP) – (BCOP + IFHP)

Front 19

19. The sites of exchange between the blood and the tissues are:

Back 19

the capillaries

Front 20

20. The blood vessels that drain blood directly from the capillary beds are:

Back 20

the venules

Front 21

21. Which of the following does NOT cause vasodilation?

Back 21

Increase parasympathetic stimulation

Front 22

22. Which blood vessels play a key role in regulating blood distribution and pressure because their diameter may be easily and rapidly adjusted?

Back 22

Arterioles

Front 23

23. Which part of the arterial wall contains smooth muscles?

Back 23

Tunica Media

Front 24

24. Which pressures contribute to filtration?

Back 24

a. Both A and B are correct: BHP and IFOP

Front 25

25. Which resistance factor is most important in controlling blood pressure?

Back 25

a. Diameter of the arteriole lumen

Front 26

26. Given the heart rate (70 beats/min), stroke volume (70 ml) and blood pressure (120/80 mmHG) calculate the cardiac output (ML/MIN)

Back 26

a. 4900 ml/min

Front 27

27. Cardiac muscle relies primarily on:

Back 27

a. Aerobic respiration for ATP production

Front 28

28. Increased secretion of which of the following hormones would decrease blood pressure?

Back 28

a. ANP: arterial natriuretic peptide

Front 29

29. Autoregulation of blood flow responds to:

Back 29

a. Metabolic demand by directing blood to the most active tissues

Front 30

30. The T wave of ECG is associated with:

Back 30

Ventricular Repolarization

Front 31

31. On the venous end of the capillary:

Back 31

a. The pressures governing bulk flow favor net reabsorption

Front 32

32. The trachea:

Back 32

a. Conducts air from the larynx into the bronchi and lined with the pseudo stratified ciliated columnar epithelium (A AND B ARE CORRECT)

Front 33

33. Each of the following is part of the resp. membrane except:

Back 33

a. Lymphatic vessel basement membrane

Front 34

34. The basic steps of gas exchange or respiration in the body include:

Back 34

a. (ALL ARE CORRECT) Pulmonary ventilation, external respiration, internal respiration

Front 35

35. Exhalation (expiration):

Back 35

a. Is usually a passive process at rest and depends upon the elastic recoil of the chest wall and lungs. (BOTH ARE CORRECT)

Front 36

36. Tidal volume is:

Back 36

a. The amount of air moved in and out of the lungs during normal breathing.

Front 37

37. The presence of _______ decreases the surface tension in the alveoli preventing their collapse after exhalation. Many premature infants have respiratory problems related to insufficient amount of this substance:

Back 37

Surfactant

Front 38

38. The P wave of the ECG is associated with:

Back 38

Atrial Depolarization

Front 39

39. When the diaphragm and external intercostal muscles contract, which action does not occur?

Back 39

the pressure inside the lungs increase

Front 40

40. The most important method of capillary exchange of CO2, O2, glucose, amino acids, and hormone is:

Back 40

Diffusion

Front 41

41. Which is not correctly described:

Back 41

a. Residual volume: amount of air moved in and out of the lungs during normal quiet breathing.

Front 42

42. External respiration:

Back 42

a. Moves CO2 out of blood and O2 into blood…and is the exchange of gases between the lungs and blood (A AND B ARE CORRECT)

Front 43

43. During internal respiration:

Back 43

a. Gases are exchanged between the blood and tissue and O2 moves out of blood… and CO2 moves into blood. (BOTH A AND B ARE CORRECT)

Front 44

44. Which does NOT directly factor in the rate of gas exchange?

Back 44

Volume of gas available

Front 45

45. How is CO2 transported in the blood?

Back 45

a. As CO2 dissolved in the plasma… bound to hemoglobin… as bicarbonate ions. (ALL ARE CORRECT)

Front 46

46. How is O2 transported?

Back 46

a. Bound to hemoglobin and as O2 dissolved in plasma (A AND B ARE CORRECT)

Front 47

47. Which ion is responsible for the plateau phase of the cardiac action potential?

Back 47

Calcium Ion

Front 48

48. Which of the following classifications of respiratory structure is correctly described?

Back 48

a. Structural, upper resp. system: nose, pharynx and associated structures… Structural lower resp. system: larynx, trachea, bronchi, lungs… Functional conducting portion: interconnecting cavities and tubes outside and within the lungs… Functional resp. portion: tissues within the lungs where gas exchange often occurs. (ALL ARE CORRECT)

Front 49

49. Which of the following is correctly described?

Back 49

a. Walls of the bronchioles contain smooth muscle that regulates airway resistance.

Front 50

50. Regular aerobic exercise could lead to ventricular hypertrophy which results in an increased stroke volume and _______ heart rate at rest.

Back 50

Decreased

Front 51

51. What is the most important factor in determining whether O2 dissociates from or binds to hemoglobin?

Back 51

PO2

Front 52

52. Each of the following is part of the respiratory membrane EXCEPT the :

Back 52

Lymphatic vessel basal membrane

Front 53

53. The larynx:

Back 53

a. Connects the pharynx to the trachea… The primary site of voice production… Normally receives only air… Lies anterior to the esophagus. (ALL ARE CORRECT)