A
– comprise 0.5-1% of all leukocytes; B – their nuclei are masked by granules; C – their
specific granules stain metachromatically; D
– their granules contain heparin and
histamine; E
– they are macrophage precursors.
8. Each of the following statements concerning the monocytes is true, EXCEPT:
A
– are the largest circulating blood cells; B – have kidney-shaped nuclei; C – contain
specific granules; D
– contain azurophilic granules; E – comprise 6-8% of all leukocytes.
9. The following blood cells are direct macrophage precursors:
A
– lymphocytes; B – basophils; C – eosinophils; D – monocytes; E – neutrophils.
10. Each of the following statements concerning the lymphocytes is true, EXCEPT:
A
– are small, medium-sized, and large; B – comprise 60-70% of all leukocytes; C – have
large round nuclei; D
– have narrow rims of the light blue cytoplasm; E – are divided into T
and B lymphocytes.
11. The blood cells responsible for humoral immunity and converting to plasma
cells are as follows:
A
– T lymphocytes; B – basophils; C – monocytes; D – neutrophils; E – B lymphocytes.
12. The blood cells primarily responsible for cell-mediated immunity are as follows:
A
– T lymphocytes; B – eosinophils; C – B lymphocytes; D – basophils; E – neutrophils.
Directions
: one or more of the given statements or completions is/are correct. Choose the
answer: A
– if only 1,2, and 3 are correct; B – if only 1 and 3 are correct; C – if only 2 and
4 are correct; D
– if only 4 is correct; E – if all are correct.
13. The following statements regarding the reticulocytes are true:
(1) are immature red blood cells (2) contain reticular clusters of ribosomes (3) comprise
about 1% of all erythrocytes (4) increase in number in cases of bleeding or hemolysis
14. The erythrocyte functions are as follows:
(1) oxygen transport (2) blood coagulation (3) carbon dioxide transport (4) phagocytosis of
bacteria
15. The platelet functions are as follows:
(1) gas transport (2) blood coagulation (3) phagocytosis of bacteria (4) clotting
16. In embryogenesis blood originates from:
(1) mesoderm (2) ectoderm (3) endoderm (4) mesenchyme
17. The neutrophil functions are as follows:
(1) histamine inactivation (2) release of histamine (3) macrophagocytosis (4) phagocytosis
and destruction of bacteria
18. The eosinophil functions are as follows:
1) histamine inactivation (2) release of histamine (3) inactivation and killing of parasitic
agents (4) secretion of immunoglobulins
19. The following statements regarding the eosinophils are true:
(1) their nuclei have 2-3 lobes (2) lack primary granules (3) their specific granules contain
the crystalline core (4) comprise 20-30% of all leukocytes
20. The pathological processes causing an increase in the number of blood
eosinophils are as follows:
(1) bleeding (2) allergic reactions (3) hemolytic diseases (4) parasite invasion
21. Agranulocytes include the following leukocytes:
(1) lymphocytes (2) basophils (3) monocytes (4) eosinophils
22. Granulocytes include the following leukocytes:
(1) neutrophils (2) basophils (3) eosinophils (4) monocytes
23. The key cells of the immune system are the following blood formed elements:
(1) T lymphocytes (2) neutrophils (3) B lymphocytes (4) basophils
24. Lymphocytes are classified into T and B types according to:
(1) surface determinants (2) ultrastructure (3) site of differentiation (4) shape
