46
6-20.
What objective should be used for counting
RBCs?
1.
Low power
2.
High power
3.
Oil immersion
4.
High dry
6-21.
When counting cells, to arrive at a correct
count, the cells touching the lines on
the_______ and ________are counted in
addition to all cells totally within each
square.
1.
Left, top
2.
Left, bottom
3.
Right, top
4.
Right, bottom
6-22.
To arrive at the number of RBCs per mm
3 ,
total the number of cells counted in the five
fields and multiply by
1.
0.1
2.
10.0
3.
100.0
4.
10,000.0
6-23.
Which of the following factors affect
hemoglobin values?
1.
Age
2.
Sex
3.
Altitude
4.
All the above
6-24.
Both the number of squares and the
counting procedure for WBCs is the same
as it is for RBCs.
1.
True
2.
False
6-25.
What is the term used for the volume of
erythrocytes expressed as a percentage of
the volume of whole blood in a sample?
1.
Hematocrit
2.
Hemoglobin
3.
Red blood count
4.
Complete blood cell count
6-26.
The hematocrit for a normal, healthy
female is within what range?
1.
30 to 40 percent
2.
37 to 47 percent
3.
42 to 50 percent
4.
44 to 52 percent
6-27.
A shift from leukocytosis toward
leukopenia in a patient with a systemic
bacterial infection is a good sign.
1.
True
2.
False
6-28.
Select from those listed below the term
used to describe an abnormally high WBC
count.
1.
Leukocytosis
2.
Erythrocytosis
3.
Leukopenia
4.
Pancytopenia
6-29.
Which of the following conditions may
cause leukopenia?
1.
Strep throat
2.
Psittacosis
3.
Anaphylactic shock
4.
Each of the above
6-30.
To arrive at the number of white cells per
mm3 of blood, total the number of cells
counted in the four fields and multiply by
1.
0.5
2.
5.0
3.
50.0
4.
5000.0
