Lab 431 Exam #Questions with correct answers
If you make a standard WBC dilution (1:20) and subsequently counted a total of
130 cells in the four leukocyte counting areas on a hemocytometer, what is the
patient's total leukocyte count? - ✔✔6.5 x 10^3/uL
If the WBC count for a sample is 11.0 x 10^3/uL and the relative lymph % is 35? -
✔✔3500 or 3.5 x 10^3/uL
CD surface markers including CD2, CD3, CD5 and CD7 are associated with which
subclass of lymphocyte? - ✔✔T lymphs
Hemoglobin that has combined with carbon monoxide is called? -
✔✔Carboxyhemoglobin
Monocytes contribute to a properly functioning adaptive immune response by? -
✔✔Processing and presenting foreign antigens to lymphocytes
A transient, short-term increase in the WBC count that approaches the level of
40-50,000/uL is known as? - ✔✔Leukemoid reaction
The Hgb result is used in the computation of? - ✔✔MCH and MCHC
Which of the following is a cause of neutrophilia? - ✔✔Acute bacterial infection
This renal hormone stimulates erythropoiesis in the bone marrow? -
✔✔Erythropoietin
, Which of the following conditions could introduce a source of error into a manual
RBC count? - ✔✔Counting the RBC touching all of the borders of each counting
square.
Forty-five percent of the volume of blood is normally composed of? -
✔✔Erythrocytes
How would you classify the red cell population with the following indices: MCV =
70 fL, MCH = 25 pg, MCHC = 30 gm/dL? - ✔✔Microcytic, hypochromic
The myeloid cells within the bone marrow that belong to the post-mitotic or
storage pool include? - ✔✔Bands, segmented neutrophils and metamyelocytes
T lymphocytes that possess the CD8 surface marker mediate which of the
following T-cell functions? - ✔✔Cytotoxic
Which of the following is considered a normal form of hemoglobin? -
✔✔Glycosylated hemoglobin
A patient with a history of polycythemia (too many RBCs) is seen for a routine
checkup. What might the laboratory scientist have to do to prepare an optimal
blood smear? - ✔✔Decrease the angle of the spreader slide and decrease the
push speed
Neutrophils exit the circulation and move into the tissues in a process known as? -
✔✔Diapedesis
If you make a standard WBC dilution (1:20) and subsequently counted a total of
130 cells in the four leukocyte counting areas on a hemocytometer, what is the
patient's total leukocyte count? - ✔✔6.5 x 10^3/uL
If the WBC count for a sample is 11.0 x 10^3/uL and the relative lymph % is 35? -
✔✔3500 or 3.5 x 10^3/uL
CD surface markers including CD2, CD3, CD5 and CD7 are associated with which
subclass of lymphocyte? - ✔✔T lymphs
Hemoglobin that has combined with carbon monoxide is called? -
✔✔Carboxyhemoglobin
Monocytes contribute to a properly functioning adaptive immune response by? -
✔✔Processing and presenting foreign antigens to lymphocytes
A transient, short-term increase in the WBC count that approaches the level of
40-50,000/uL is known as? - ✔✔Leukemoid reaction
The Hgb result is used in the computation of? - ✔✔MCH and MCHC
Which of the following is a cause of neutrophilia? - ✔✔Acute bacterial infection
This renal hormone stimulates erythropoiesis in the bone marrow? -
✔✔Erythropoietin
, Which of the following conditions could introduce a source of error into a manual
RBC count? - ✔✔Counting the RBC touching all of the borders of each counting
square.
Forty-five percent of the volume of blood is normally composed of? -
✔✔Erythrocytes
How would you classify the red cell population with the following indices: MCV =
70 fL, MCH = 25 pg, MCHC = 30 gm/dL? - ✔✔Microcytic, hypochromic
The myeloid cells within the bone marrow that belong to the post-mitotic or
storage pool include? - ✔✔Bands, segmented neutrophils and metamyelocytes
T lymphocytes that possess the CD8 surface marker mediate which of the
following T-cell functions? - ✔✔Cytotoxic
Which of the following is considered a normal form of hemoglobin? -
✔✔Glycosylated hemoglobin
A patient with a history of polycythemia (too many RBCs) is seen for a routine
checkup. What might the laboratory scientist have to do to prepare an optimal
blood smear? - ✔✔Decrease the angle of the spreader slide and decrease the
push speed
Neutrophils exit the circulation and move into the tissues in a process known as? -
✔✔Diapedesis
