Hematology Quiz
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Approximately how many platelets are seen in a normal blood smear per HPF
A. 7-21
B. 6-21
Causes increased MCHC except
A. Lipemic samples
B. Icteric samples
C. Increased wbc count
D. NOTA
Also known as the pack cell volume
A. hematocrit
B. pipette
Suggests that each of the blood cell lineage is derived from its own unique stem cell
A. Polyphyletic theory
B. Myelophyletic theory
What is not a function of WBCs?
A. fight of infection
B. carry oxygen
C. phagocytosis
D. synthesis antibodies
Which myeloid progenitor is referred to as dawn of neutrophilia?
A. Myelocyte
B. Metamyelocyte
The length of fall of the top of the colun of erythrocytes in agiven interval of time
A. Hematocrit
B. Hemoglobin
C. ESR
D. MCV
Arrangement of red cells with their flat surfaces facing, so that they resemble stacks of coins:
A. Sedimentatin
B. Rouleaux Formation
C. Precipitation
D. Clumping
Absorbance of cyanmethemoglobin determination
A. 540 nm
B. 550 nm
What is the color of gauge 21 needle?
A. BLUE
B. PINK
C. BLACK
D. GREEN
All of the following describes an orthocromatic erythroblast except
A. gives rise to 2 daughter cells
B. it is not capable of mitosis
Hematocrit is also known as?
A. MCV
(mean corpuscular volume)
B. (PCV)
Packed cell volume
C. MCHC
(mean corpuscular hemoglobin concentration)
blue specks in the feathered edge of pbs
A. increased platelet count
B. increased wbc count
Due to a problem in the bone marrow, the hepatic phase of fetal life is reactivated in an adult, hematopoiesis can be termed as:
A. Myeloid metaplasia or medullary
B. Myeloid or medullary
C. Myelophthisis or myelodysplasia
D. Mesoblastic or mesenchymal
Provide the suitable microenvironment for the maturation and proliferation of hematopoietic cells
A. adipocytes
B. endothelial cells
C. fibroblast
D. all of the above
Heinz body is usually seen in:
A. Leukocytes
B. Thrombocytes
C. Erythrocytes
D. Lymphocytes
Stain that are used to differentiate and count young RBCs
A. Nucleic Acid Stains
B. Eosin
C. Giemsa Stain
FACTOR XII
A. Hagemen
B. Glass factor
C. Contact factor
D. All of the above
These are termed “dawn of neutrophilia” due to the increase of secondary granules and decrease of primary granules.
A. Myelocytes
B. Promyelocytes
C. Metamyelocytes
D. Bands
A laboratorian using the 50x OO sees the following numbers of wbc in 10 fields 7,4,9,8,8,6,5,7,9,7. Which of the following wbc counts most closely correlates with the estimante
A. 21.0×10 9/L
B. 22.0×10°/L
In a bone marrow biopsy specimen, the RBC precursors were estimated to account for 25% of the cells in the marrow, and the other 75% were granulocyte precursors. What is the M:E ratio?
A. 3:1
B. 4:6
C. 1:1.5
D. 1:3
When preparing crush smears, this may be added to the solution if the specimen is suspected to contain prolymphocytes of lymphoblast.
A. 22% albumin
B. NaCl
What is the largest hematopoietic cell found in a normal bone marrow aspirate?
A. Megakaryocyte
B. Osteoblast
C. Myeloblast
D. Pronormoblast
demonstration of LE cells
A. buffy coat smear
B. wedge smear
Which of the following granules are last to be released?
A. Proteinase-3
B. Collagenase
C. Acetyltransferase
D. Complement 1q receptor
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