QUIZ

WeekOne Quiz

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University of Phoenix Material

Week One Quiz

Chapter 19 Cardiovascular System: Blood

1. A blood clot that forms when a blood vessel is cut is an example of blood functioning in 

a. protection.

b. elimination.

c. maintenance.

d. transportation.

e. communication.

2. Neutrophils of the blood are derived from a population of stem cells called 

a. lymphoblast

s.

b. proerythroblasts.

c. myeloblasts.

d. megakaryoblasts.

e. monoblasts.

3. Mr. Smith moved from a low altitude to a high altitude and experienced an increase in RBCs. Which of the following caused this increase? 

a. the lower temperature present at higher altitudes

b. the lower oxygen concentration seen at higher altitudes

c. the increased metabolic rate seen at higher altitudes

d. the increased CO2 retention that occurs at high altitudes

e. He exercised more.

4. When a person develops a sore throat, white blood cells are drawn to the area of infection by a process called

a. chemotaxis.

b. diapedesis.

c. margination.

d. ameboid movement.

e. attraction.

5. A deficiency of which of the following stem cells would result in a marked increase in the clotting time of blood? 

a. lymphoblast

b. megakaryoblast

c. monoblast

d. myeloblast

e. proerythroblast

6. A blood clot attached to a blood vessel wall is called a(an) 

a. thrombus.

b. embolus.

c. prostacylin.

d. hemorrhage.

e. anticoagulant.
 

7. Which of the following is mismatched? 

a. blood typing – determines ABO and Rh blood groups of a blood sample

b. blood crossmatch – donor and recipient blood cells are mixed together

c. complete blood count – includes RBC and WBC counts

d. differential count – determines the percent of each kind of leukocyte in the blood

e. hematocrit – percentage of total blood volume composed of RBCs  

8. These cells are produced by hematopoiesis. What does “A” represent? 

a. granulocytes

b. platelets

c. lymphocyte

d. neutrophil

e. red blood cell

9. These cells are produced by hematopoiesis. What does “B” represent? 

a. granulocytes
b. platelets
c. lymphocyte
d. neutrophil

e. red blood cell

10. These cells are produced by hematopoiesis. What does “C” represent? 

a. granulocytes
b. platelets
c. lymphocyte
d. neutrophil
e. red blood cell

Chapter 20 Cardiovascular System: The Heart

1. The pericardial sac is lined with 

a. fibrous pericardium.

b. parietal pericardium.

c. visceral pericardium.

d. myocardium.

e. epicardium.

2. Blood in the pulmonary veins returns to the 

a. right atrium.

b. left atrium.

c. right ventricle.

d. left ventricle.

e. coronary sinus.

3. These vessels empty blood into the left atrium. 

a. Aorta

b. right atrium

c. pulmonary trunk

d. pulmonary arteries

e. pulmonary veins

4. The cardiac electrical impulse normally begins spontaneously in the SA node because 

a. of the superior location of the SA node in the right atrium.

b. the SA node is the only area of the heart capable of spontaneous depolarization.

c. of the rich sympathetic innervation of the SA node.

d. this area depolarizes more rapidly than any other portion of the conduction system.

e. of action potentials from the cardioregulatory center.

5. 5. Which of the following would result from a reduced function of the sodium channels in the SA node? 

a. depolarization would be delayed

b. the heart rate would decrease

c. repolarization would not occur

d. a shortened plateau phase

e. depolarization would be delayed and the heart rate would decrease

6. The period of isovolumic contraction is immediately followed by 

a. the period of ejection.

b. AV node depolarization.

c. passive ventricular filling.

d. atrial contraction.

e. isovolumic relaxation.
 

7.
What occurs during the time between the first heart sound and the second heart sound? 

a. systole

b. diastole

c. ventricular filling

d. a heart murmur

e. the P wave of the ECG
 

8. Afterload is 

a. the name given to an increase in end-diastolic volume.

b. the arterial pressure that the ventricles must overcome to eject blood.

c. the amount cardiac output must increase during exercise.

d. another name for venous return.

e. the extent to which ventricular walls are stretched.

9. In a physiology lab, the students designed an experiment to illustrate how the heart responds to changes in blood pressure. Everyone relaxed and then did a headstand. Which of the following observations are consistent with the change in the function of their hearts?

a. increased heart rate

b. decreased heart rate

c. increased stroke volume

d. decreased stroke volume

e. both decreased heart rate and increased stroke volume

10. During hemorrhagic shock in which blood pressure is decreased, which of the regulatory mechanisms is most important is increasing cardiac output to help maintain blood pressure? 

a. increased sympathetic stimulation of the heart

b. increase venous return

c. increase in parasympathetic stimulation of the heart

d. increase vagal stimulation of the heart

e. increase in the amplitude of the heart sounds