Answered questions on functions of WBCs and hemostasis by Dr Khaled A Abulfadle

Admin عدد المساهمات : 9680 تاريخ التسجيل : 06/08/2009

SEQs

1-Functions of neutrophils …………….

2-Eosinophilia occurs in ………………

3-Monocyte-macrophage system (reticuloendothelial system, RES) …………………

4-Functions of B-lymphocytes include ……………

5-Types of T-lymphocytes include ………………….

6-Define plasma, serum, homeostasis, hemostasis and thrombosis?

7-Local vascular spasm after vascular injury is caused by…………………… and it is of value in ……………………….

8-Intrinsic pathway of clot formation …………………………….

9-Fibrinolytic system ………………………..

10-Steps of hemostasis include ……………………………

11-Factors prevent intravascular clotting normally include ………………….

MCQs

1-An acute infection would show up in a blood count as…………………………
a-leukopenia.
b-too few helper T cells.
c-polycythemia.
d-leukocytosis.
e-thrombocytopenia.

2-Which of the following indicates a normal white blood cell count?
a- 1 million per mm3.
b- 15,000 per cm3.
c- 10,000 per mm3.
d- 20,000 per mm3.
e- 3,000 per mm3.

3- Which cell is not phagocytic?
a- neutrophil.
b- monocyte.
c- macrophage.
d- eosinophil.
e- basophil.

4- Antibodies are defense substances produced by the ………………… cells.
a- neutrophil.
b- monocyte.
c- B-lymphocyte.
d- eosinophil.
e- basophil.

5-Neutrophils, eosinophils and basophils are alike in that they …………………….
a- lack a defined nucleus.
b- are the only phagocytic leukocytes.
c- release histamine.
d- are granulocytes.
e- are immotile leukocytes.

6-Which WBC releases histamine at sites of inflammation?
a- neutrophil.
b- eosinophil.
c- basophil.
d- lymphocyte.
e- monocyte.

7- Antibodies can inactivate the invading agent by ………………
a- agglutination.
b- neutralization.
c- precipitation.
d- lysis.
e- all of the above.

8- Which of the following initiates the coagulation cascade in vivo?
a- Factor XII.
b- Thrombin.
c- Tissue factor.
d- Factor X.
e- Prekallikrein.

9- What does von Willebrand factor do?
a- Binds platelets to each other.
b- Binds platelets to the subendothelium.
c- Binds platelets to the phospholipid surface.
d- Carries factor VII.
e- Cleaves factor V.

10-Tissue thromboplastin is the clotting factor ……….
a- I.
b- II.
c- III.
d- IV.
e- V.

11-Calcium is the clotting factor ……….
a- I.
b- II.
c- III.
d- IV.
e- V.

Answers

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Admin عدد المساهمات : 9680 تاريخ التسجيل : 06/08/2009

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