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Multiple Choice Quiz
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1
A term that describes clumped blood cells is:
A)isotonic
B)agglutination
C)erythremia
D)anoxia
2
An immature red blood cell sometimes seen in the WBC count and on blood smears is a(n):
A)megaloblast
B)erythroblast
C)erythrocyte
D)nucleated red blood cell
3
The laboratory device that is used to perform manual blood cell counts is a:
A)Petri dish
B)micro pipette
C)hemacytometer
D)vacutainer
4
A hemacytometer is used to:
A)measure the diameter of a red cell
B)calculate the number of blood cells
C)manually count the number of blood cells
D)measure the size of a blood cell in micrometers
5
The WBC count is normally at the lowest level:
A)in the morning after resting the night
B)after exercise
C)after smoking a cigarette
D)after working 8 hours
6
To prevent evaporation and give time for the cells to equilibrate before counting, the loaded hemacytometer used in a WBC count should be:
A)left for 2 minutes in a damp Petri dish
B)put in an incubator for 15 minutes
C)immediately counted
D)overloaded to prevent drying
7
An uneven distribution of cells in the hemacytometer usually means:
A)the dilution is incorrect
B)the cells are clumping together
C)the blood was not mixed correctly
D)the hemacytometer is dirty
8
Which of the following causes a decrease in the total RBC count?
A)viral infection
B)aplastic anemia
C)anoxia
D)smoking
9
If the number of red cells decreases, which of the following will most likely result?
A)Low hemoglobin level
B)Relative hemoglobin increase
C)WBC count will not be affected
D)Polycythemia vera
10
The solution contained in the Unopette RBC count kit is:
A)saline
B)acetic acid
C)water
D)hydrochloric acid





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