Cardiovascular System EXAM TWO

Question 1

1.    Which of the following is not correct concerning the location of the heart:
A.   It is inferior to the lungs.
B.   It is posterior to the diaphragm.
C.   It is superior to the lungs.
D.   It is anterior to the vertebrae

Answer 1

1. The correct answer is C.

Question 2

2.    Heart muscle is also called:
A.   Endothelium.
B.   Endocardium.
C.   Epicardium.
D.   Myocardium.
E.   Visceral pericardium.

Answer 2

2. The correct answer is D.

Question 3

3.    The epicardium:
A)   is also known as the parietal pericardium.
B)   is a layer of cardiac muscle.
C)   is the visceral pericardium.
D)   lines the heart chambers.
E)   is the pacemaker of the heart.

Answer 3

3. The correct answer is C.

Question 4

4.    Blood vessels that carry blood away from the heart are called:
A.   Arteries.
B.   Veins.
C.   Capillaries.
D.   All of the above.

Answer 4

4. The correct answer is A.

Question 5

5.    The tissue which forms a loose-fitting sac around the heart is the:
A.   Visceral pericardium.
B.   Parietal pericardium.
C.   Myocardium.
D.   Epicardium.   
E.   Endocardium.

Answer 5

5. The correct answer is B.

Question 6

6.    The valve between the left ventricle and the blood vessel leaving the left ventricle is the:
A.   Bicuspid valve.
B.   Tricuspid valve.
C.   Pulmonary semilunar valve.
D.   Aortic semilunar valve.

Answer 6

6. The correct answer is D.

Question 7

7.    The smallest type of blood vessels are:
A.   Arteries.
B.   Arterioles.
C.   Venules.
D.   Capillaries.

Answer 7

7. The correct answer is D.

Question 8

8.    The fluid filled sac that surrounds the heart is called the:
A.   Myocardium.
B.   Pericardium.
C.   Ventricle.  
D.   Septum.

Answer 8

8. The correct answer is B.

Question 9

9.    Blood exits the left ventricle in which one of the following blood vessels:
A.   aorta
B.   coronary artery
C.   pulmonary trunk
D.   pulmonary vein
E.   superior vena cava

Answer 9

9. The correct answer is A.

Question 10

10.Compared to an artery, the wall of a vein differs in which of the following way:
A. It consists of three coats called tunics.
B. It is lined by a thin layer of endothelium.
C. It contains smooth muscle.
D. The middle tunic is thin.
E. Veins have an extra layer of muscle.

Answer 10

10.The correct answer is D.

Question 11

11.Most often, systemic arterial blood pressure is measured in this artery with the auscultatory method, using a stethoscope and sphygmomanometer: 
A.   Aorta.
B.   Brachial artery.
C.   Carotid artery.
D.   Femoral artery.
E.   Radial artery.

Answer 11

11.The correct answer is B.

Question 12

12.Which of the following blood vessels is not  part of the systemic circulation:
A.   Aorta.
B.   Carotid arteries.
C.   Coronary artery.
D.   Inferior vena cava.
E.   Pulmonary artery.

Answer 12

12.The correct answer is E.

Question 13

13.Which Of the following is not one of the great vessels of the heart?
A.   Pulmonary arteries.
B.   Coronary arteries.
C.   Superior vena cava.
D.   Pulmonary veins.

Answer 13

13.The correct answer is B.

Question 14

14.During the period of ejection in the cardiac cycle, the atrioventricular valves are …………….. and the semilunar valves are………………
A.   closed, closed
B.   closed, open
C.   open, closed
D.   open, open

Answer 14

14.The correct answer is B.

Question 15

15.The most common site for taking blood samples is the:
A.   Brachial vein.
B.   Ulnar vein.
C.   Median cubital vein.
D.   Brachial artery.

Answer 15

15.The correct answer is C.

Question 16

16. The following are the heart valves:
    1) aortic semilunar valve
    2) bicuspid (mitral) valve
    3) pulmonary semilunar valve
    4) tricuspid valve.

Arrange them in the order in which an erythrocyte would pass through them after returning to the heart from the left arm:
A.   1,2,3,4
B.   2,3,1,4
C.   3,1,2,4
D.   3,4,2,1
E.   4,3,2,1

Answer 16

16.The correct answer is A.

Question 17

17.Which of the following does not aid the return of venous blood to the heart from the lower extremities?
A.   Valves in veins.
B.   The muscle "pump" .
C.   The respiratory "pump" .
D.   Gravity.  
E.   The large lumen of veins.

Answer 17

17.The correct answer is D.

Question 18

18.Which of the following indicates atrial depolarization in an electrocardiograms:
A.   P wave.
B.   QRS complex.
C.   QT interval.
D.   T wave.
E.   U wave.

Answer 18

18.The correct answer is A.

Question 19

19.If the SA node becomes damaged and nonfunctional, which of these is the most likely to occur?
A. The heart will stop.
B. The ventricles will contract, but the atria will stop.
C. Another part of the heart, possibly the AV node, will become the pacemaker.
D. The heart will beat faster.
E. The atria will keep contracting, but the ventricles will stop.

Answer 19

19.The correct answer is C.

Question 20

20.Early repolarization of cardiac muscle cells occurs when:
A. voltage-gated Ca2+ ion channels open.
B. voltage-gated K+ ion channels open.
C. voltage-gated Na+ ion channels close.
D. both b and c.

Answer 20

20.The correct answer is D.

Question 21

21.During the QT interval of the ECG, the:
A. atria contract and begin to relax.
B. atria relax.
C. ventricles contract and begin to relax.
D. ventricles relax.

Answer 21

21.The correct answer is C.

Question 22

22.Which of the following is NOT true during ventricular systole?
A. AV valves close.
B. Intraventricular pressure rises.
C. Semilunar valves close.
D. The atria are relaxed.
E. Chordae tendinae prevent AV valve flaps from flipping up into the atria.

Answer 22

22.The correct answer is C.

Question 23

23.Which of the following blood vessels carries oxygen-rich blood?
A.   Coronary sinus.
B.   Inferior vena cava.
C.   Pulmonary trunk.
D.   Pulmonary vein.
E.   Superior vena cava.

Answer 23

23.The correct answer is D.

Question 24

24.The second heart sound, described as "dupp" is actually the sound of the
A.   Atria contracting.
B.   Ventricles contracting.
C.   Atrioventricular valves closing.
D.   Semilunar valves closing.
E.   Heart slapping the liver.

Answer 24

24.The correct answer is D.