Last Modified: December, 2009. (J. Crimando)

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Practice Quiz #1

Choose the best answer to each question. Be sure to answer each question, unanswered question are scored as incorrect. When finished, check your final score by clicking on the "Grade" button at the bottom. There are nine more quizzes at the bottom of the page.

1. The lining of the inner walls of the heart’s chambers is termed the:
a. visceral pericardium
b. serous pericardium
c. epicardium
d. myocardium
e. endocardium  

2. The outermost layer of the heart’s serous pericardium is termed the:
a. visceral pericardium
b. parietal pericardium  
c. epicardium
d. myocardium
e. endocardium

3. The heart’s natural pacemaker is termed the:
a. sinoatrial node  
b. atrioventricular node
c. bundle of His/atrioventricular bundle
d. left and right bundle branches
e. Purkinje fibers

4. The heart’s electrical conduction network found within the ventricular myocardium is termed the:
a. sinoatrial node
b. atrioventricular node
c. bundle of His/atrioventricular bundle
d. left and right bundle branches
e. Purkinje fibers  

5. If the heart’s natural pacemaker fails to fire, then:
a. no blood would enter the atria
b. no blood would enter the ventricles
c. the node on the floor of the right atrium would act as a secondary pacemaker  
d. the node on the floor of the left ventricle would act as a secondary pacemaker
e. the person would die within minutes

6. Which tunic of an artery contains endothelium?
a. tunica interna/intima  
b. tunica media
c. tunica externa
d. tunica adventitia

7. The exchange of gases and nutrients between blood and tissues is a major function of:
a. arterioles
b. arteries
c. capillaries  
d. veins

8. Which of the following statements best describes arteries?
a. all arteries carry oxygenated blood towards the heart
b. all arteries contain valves to prevent the back-flow of blood
c. all arteries carry blood away from the heart  
d. only large arteries are lined with endothelium

9. The circulatory pathway that carries blood from the digestive tract towards the liver is termed the:
a. coronary circuit
b. cerebral circuit
c. hepatic portal circuit  
d. pulmonary circuit

10. Immediately following strenuous and vigorous exercise, which of the following is most likely to occur?
a. blood will be rapidly diverted to the digestive organs
b. the skin will be cold and clammy
c. capillaries of the active muscles will be engorged with blood  
d. blood flow to the kidneys quickly increases

  
 
 
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