Question

Choose the letter that best completes the statement or answers the question

1. The layer of the heart that is composed mainly of cardiac muscle and forms the bulk of the
heart is the
a. endocardium b. myocardium c. pericardium

2. The chamber of the heart that sends blood to the systemic circulation is the
a. left atrium b. right ventricle c. left ventricle d right atrium

3. Choose the correct track of pulmonary circuit going to the systemic circuits:
1. right side of heart 2. lungs 3. left side of the heart 4. aorta 5. inferior vena cave
a. 2, 1, 3, 4, 5 b. 2, 4, 5, 1, 3 c. 4, 2, 3, 1, 5 d. 2, 3, 4, 5, 1

4. The artery that supplies the left atrium and the posterior walls of the left ventricle is the
a. anterior interventricular artery b. marginal artery
c. posterior interventricular artery d. circumflex artery

5. The valve that connects the left atrium and the left ventricle is the
a. mitral b. semilunar c. aortic d. tricuspid

6. The sequence of the excitation of the heart is:
1. AV node 2. SA node 3. Purkinje fibers 4. Bundle branches 5. Bundle of His
a. 1, 2, 3, 4, 5 b. 3, 4, 5, 1, 2, c. 2, 3, 4, 5, 1 d. 2, 1, 5, 4, 3

7. The term _____________ refers to the contraction of the heart
a. diastole b. systole c. preload

8. The parasympathetic effects on the heart lead to
a. decreased heart rate b. increased heart rate   
c. increased vagal tone d. increased metabolic rate

9. ________ is the stretch of the heart wall due to the load to which a cardiac muscle is subject before shortening.
a. systole b. diastole c. preload d. afterload

10. The most preventable heart disease is
a. ventricular septal defect b. Tetralogy of Fallot
c. atherosclerosis d. coartation of the aorta

11. An ECG provides information about
a. cardiac output b. movement of the excitation across the heart
c. coronary circulation d. valve impairment


12. Freshly oxygenated blood is first received by the
a. right atrium b. right ventricle c. left atrium d. left ventricle

13. The thick-walled arteries near the heart- the aorta and its major branches are called
a. arterioles b. capillaries c. muscular d. elastic

14. Fenestrated capillaries with perpetual open pores are located in the
a. kidneys b. brain c. liver d. spleen

15. The vessels that are 8 to 100 um in diameter and formed when capillaries unite are called
a. pre capillaries b. venules c. veins d. arterioles

16. Alcohol, adrenal hormones, ANP, ADH, Angiotensin II, Nitric Oxide are all part of the
_______________ controls of blood pressure
a. chemical b. neural c. renal b. cardiac

17. Which of the following pulses is palpated behind the knee?
a. posterior tibialis b. brachial c. carotid d. popliteal e. facial

18. Which of the following pulses is palpated in the groin region?
a. radial b. dorsalis pedis c. femoral d. brachial e. apex

19. The following factors are involved in essential hypertension except:
a. Obesity b. Heredity c. Arteriosclerosis d. Race

20. Most common causes of vascular shock are all of the following except:
a. neurogenic shock b. septic shock
c. anaphylactic shock d. hypovolemic shock

Answer 1

1. Myocardium
2. Left ventricle
3. 2,3,4,5,1
4. Circumflex artery
5. Mitral
6. 2,1,5,4,3
7. Systole
8. Decreased heart rate
9. Preload
10. Atherosclerosis
11. Movement of the excitation of the heart
12. Left atrium
13. Elastic arteries
14. Kidneys
15. Venules
16. Chemical
17. Popliteal
18. Femoral
19. Obesity
20. ( I don't think there is a term called as vascular shock, if it's vasculogenic/distributive shock, then the answer is hypovolemic shock. If the question says just about shock then the answer is neurogenic> anaphylactic.)

As I can't explain all the 20 questions in the avilable time, if you want explanation for any question above, leave a comment and I will get back to you.