Download Practice Test 2

Practice Test II
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1. A “self antigen” is also called hapten.
a. True
b. False
2. The primary immune response occurs when memory cells are stimulated.
a. True
b. False
3. Which immunoglobulin is directly implicated in allergic reactions?
a. Ig M
b. Ig A
c. Ig G
d. Ig D
e. Ig E
4. Which of the following statements is true?
a. Class I MHC proteins are displayed by RBCs
b. Class I MHC proteins are recognized by CD4 cells
c. Natural killer cells destroy cells infected with viruses
d. T cell activation occurs solely by costimulation
e. None of the above statements is true
5. Primary lymphoid organs include:
a. Tonsils
b. Lymph nodes
c. Spleen
d. All of the above
e. None of the above
6. Clonal selection of T cells:
a. Occur during fetal development
b. Result in formation of plasma cells
c. Cannot occur in the presence of antigens
d. Only occurs in the secondary immune response
e. None of the above
7. Fever:
a. Is a higher than normal body temperature that is always dangerous
b. Decreases the metabolic rate of the body to conserve energy
c. Production is regulated by chemicals that reset the body’s thermostat to a
higher setting
d. Causes the liver and spleen to release large quantities of iron, which seems
to inhibit bacterial growth
e. Inhibit all enzyme activity in the body
8. Complement proteins and antibodies coat a microorganism enabling macrophages
and neutrophils to phagocytize the organism. This phenomenon is termed:
a. Diapedesis
b. Agglutination
c. Opsonization
d. Chemotaxis
e. Precipitation
9. Interferons interfere with viral replication within cells.
a. True
b. False
10. Characteristics of an immune response include:
a. Antigen specificity
b. Memory
c. Systemic protection
d. All of the above
e. None of the above
11. The proliferation of activated B cells is termed:
a. Clonal selection
b. Antigen endocytosis
c. Activation
d. Degranulation
e. Diapedesis
12. Which of the following chemicals does NOT control blood pressure?
a. ADH
b. Atrial natriuretic peptide
c. Angiotensin II
d. Nitric acid
e. Epinephrine
13. Aldosterone will:
a. Promote an increase in blood pressure
b. Promote a decrease in blood volume
c. Increase urine output
d. Decrease sodium reabsorption
e. Promote vasodilation
14. The pulse pressure is:
a. The sum of the systolic and diastolic pressures
b. The difference between the systolic and diastolic pressures
c. Systolic pressure divided by the diastolic pressure
d. The sum of the diastolic and a third of the pulmonary pressure
e. The product of the systolic and diastolic pressures
15. Which of the following is likely to occur during vigorous exercise?
a. Blood will be 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. Urine output will increase
e. All of the above
16. Peripheral resistance:
a. Decreases as blood vessel length increase
b. Increases as blood vessel diameter increase
c. Increases as blood viscosity increase
d. Is not a major factor affecting blood pressure regulation in healthy
individuals
e. Increases as a result of bronchoconstriction
17. During cardiovascular crisis:
a. Blood flow to the brain decreases
b. Peripheral vessels dilate while brain vessels constrict
c. Blood supply to the brain is limited to one vessel
d. Vasodilation occurs in the brain
e. None of the above
18. The influence of blood vessel diameter on peripheral resistance is:
a. The only factor that affect flow
b. Significant because resistance is inversely proportional to the fourth power
of the vessel radius
c. Significant because resistance is directly proportional to the blood vessel
diameter
d. Insignificant because vessel diameter does not change
e. Resistance decrease when diameter increase
19. A form of circulatory shock known as hypovolemic shock is:
a. The only form of shock not caused by large-scale blood loss
b. Any condition in which blood vessels are inadequately filled and blood
cannot circulate normally
c. Shock that results from large-scale loss of blood volume
d. Always fatal
e. All of the above
20. In the dynamics of blood flow through the capillaries, hydrostatic pressure:
a. Does not play a role
b. Is the same as capillary blood pressure
c. Generally forces fluid from the interstitial space into the capillaries
d. Is completely cancelled out by osmotic pressure
e. Is produced by osmotically active elements in plasma
21. The lymphatic system is made up solely of lymphatic vessels, organs, and tissues
a. True
b. False
22. Lymph capillaries are present in:
a. Bone
b. Teeth
c. CNS
d. Bone marrow
e. None of the above
23. Lymph flow is unaffected by skeletal muscle activity in the vessel wall.
a. True
b. False
24. Fluid from the entire body drains into the thoracic duct.
a. True
b. False
25. Which of the following is NOT present in lymph nodes?
a. Capsule
b. Trabeculae
c. Lobules
d. Reticular fibers
e. Afferent lymphatic vessels at the hilus