Bio 112 Chapter 13 Practice Test - Cardiovascular System

1. Which of the following is also known as the pacemaker of the heart?

A. AV node

B. SA node

C. AV bundle

D. Purkinje fibers

2. The right atrium contracts at the same time as the left atrium.

A. true

B. false

3. The effect of parasympathetic nerve stimulation on the heart is to increase heart rate.

A. true

B. false

 4. Which of the following acts to increase blood pressure?

A. decreasing resistance

B. increasing blood volume

C. decreasing heart rate

D. increasing blood vessel diameter

5. When the ventricles contract, the

A. bicuspid valve opens and the tricuspid valve closes

B. tricuspid valve opens and the bicuspid valve closes

C. bicuspid and tricuspid valve close

D. bicuspid and tricuspid valves open

6. Blood passes from the left ventricle directly to the

A. inferior vena cava

B. superior vena cava

C. aorta

D. pulmonary trunk

7. The T wave of an ECG pattern represents the relaxation of the

A. ventricles

B. atria

C. phrenic nerve

D. none of the above

8. Which of the following is the smallest blood vessel?

A. venule

B. arteriole

C. capillary

D. artery

E. vein

9. The maximum pressure achieved during ventricular contraction is systolic pressure.

A. true

B. false

10. Pulmonary veins carry blood to the lungs.

A. true

B. false

11. Which of the following is the amount of blood pumped out the ventricles in one minute?

A. stroke volume

B. cardiac output

C. heart rate

D. cardiac cycle

12. At the venule end of the capillary, osmosis pulls water back into the blood stream.

A. true

B. false

13. During the second heart sound (dub)

A. ventricles are contracting

B. atria are contracting

14. The aorta is part of the pulmonary circulation.

A. true

15.  The carotid arteries carry blood

A.  to the head

B.  to the arm

C.  to the digestive organs

D.  to the legs

Answers:

1. b    2. a    3. b    4. b    5. c    6. c    7. a    8. c    9. a    10. b    11. b    12. a    13. b    14. b    15. a