Week One Quiz
NSCI/281 Version 5
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.
b.
c.
d.
e.
protection.
elimination.
maintenance.
transportation.
communication.
2. Neutrophils of the blood are derived from a population of stem cells called
a.
b.
c.
d.
e.
lymphoblasts.
proerythroblasts.
myeloblasts.
megakaryoblasts.
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.
b.
c.
d.
e.
the lower temperature present at higher altitudes
the lower oxygen concentration seen at higher altitudes
the increased metabolic rate seen at higher altitudes
the increased CO2 retention that occurs at high altitudes
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.
b.
c.
d.
e.
chemotaxis.
diapedesis.
margination.
ameboid movement.
attraction.
5. A deficiency of which of the following stem cells would result in a marked increase
in the clotting time of blood?
a.
b.
c.
d.
e.
lymphoblast
megakaryoblast
monoblast
myeloblast
proerythroblast
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Week One Quiz
NSCI/281 Version 5
6. A blood clot attached to a blood vessel wall is called a(an)
a.
b.
c.
d.
e.
thrombus.
embolus.
prostacylin.
hemorrhage.
anticoagulant.
7. Which of the following is mismatched?
a.
b.
c.
d.
e.
blood typing - determines ABO and Rh blood groups of a blood sample
blood crossmatch - donor and recipient blood cells are mixed together
complete blood count - includes RBC and WBC counts
differential count - determines the percent of each kind of leukocyte in the blood
hematocrit - percentage of total blood volume composed of RBCs
8. These cells are produced by hematopoiesis. What does "A" represent?
a.
b.
c.
d.
e.
granulocytes
platelets
lymphocyte
neutrophil
red blood cell
9. These cells are produced by hematopoiesis. What does "B" represent?
a.
b.
c.
d.
e.
granulocytes
platelets
lymphocyte
neutrophil
red blood cell
10. These cells are produced by hematopoiesis. What does "C" represent?
a. granulocytes
b. platelets
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Week One Quiz
NSCI/281 Version 5
c. lymphocyte
d. neutrophil
e. red blood cell
Chapter 20 Cardiovascular System: The Heart
1. The pericardial sac is lined with
a.
b.
c.
d.
e.
fibrous pericardium.
parietal pericardium.
visceral pericardium.
myocardium.
epicardium.
2. Blood in the pulmonary veins returns to the
a.
b.
c.
d.
e.
right atrium.
left atrium.
right ventricle.
left ventricle.
coronary sinus.
3. These vessels empty blood into the left atrium.
a.
b.
c.
d.
e.
Aorta
right atrium
pulmonary trunk
pulmonary arteries
pulmonary veins
4. The cardiac electrical impulse normally begins spontaneously in the SA node
because
a.
b.
c.
d.
of the superior location of the SA node in the right atrium.
the SA node is the only area of the heart capable of spontaneous depolarization.
of the rich sympathetic innervation of the SA node.
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.
b.
c.
d.
e.
depolarization would be delayed
the heart rate would decrease
repolarization would not occur
a shortened plateau phase
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.
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Week One Quiz
NSCI/281 Version 5
c. passive ventricular filling.
d. atrial contraction.
e. isovolumic relaxation.
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Week One Quiz
NSCI/281 Version 5
7. What occurs during the time between the first heart sound and the second heart
sound?
a.
b.
c.
d.
e.
systole
diastole
ventricular filling
a heart murmur
the P wave of the ECG
8. Afterload is
a.
b.
c.
d.
e.
the name given to an increase in end-diastolic volume.
the arterial pressure that the ventricles must overcome to eject blood.
the amount cardiac output must increase during exercise.
another name for venous return.
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.
b.
c.
d.
e.
increased heart rate
decreased heart rate
increased stroke volume
decreased stroke volume
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.
b.
c.
d.
e.
increased sympathetic stimulation of the heart
increase venous return
increase in parasympathetic stimulation of the heart
increase vagal stimulation of the heart
increase in the amplitude of the heart sounds
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