11 PRINCIPLES AND PRACTICE OF CLINICAL HEMATOLOGY Flashcards
The blood cells responsible for carrying oxygen are:
a. Erythrocytes
b. Leukocytes
c. Thrombocytes
d. Either a or b
a. Erythrocytes
When seen on a Wright-stained peripheral blood film, a young red cell that has just extruded its nucleus is referred to as a:
a. Normoblast (metarubricyte)
b. Orthochromatic cell
c. Polychromatophilic cell
d. Reticulocyte
c. Polychromatophilic cell
The approximate life span in peripheral blood of a red blood cell is:
a. Months to years
b. 120 days
c. 1 to 3 days
d. About 10 hours
e. Less than 8 hours
b. 120 days
Which of the following is essential to the oxygen-carrying capacity of a molecule of hemoglobin?
a. Globin
b. Heme
c. Iron
d. None of the above
c. Iron
A hemoglobin variant resulting in sickle cell anemia in the homozygous state is:
a. Hemoglobin A
b. Hemoglobin C
c. Hemoglobin F
d. Hemoglobin S
d. Hemoglobin S
The principal form of hemoglobin found in the blood of normal adults is:
a. Hemoglobin A
b. Hemoglobin C
c. Hemoglobin F
d. Hemoglobin S
a. Hemoglobin A
The principal form of hemoglobin during intrauterine life and at birth is:
a. Hemoglobin A
b. Hemoglobin C
c. Hemoglobin F
d. Hemoglobin S
c. Hemoglobin F
An irreversible combination of hemoglobin with a sulfa group, incapable of transporting oxygen or reverting to functional hemoglobin, is:
a. Carboxyhemoglobin
b. Hemiglobincyanide (cyanmethemoglobin)
c. Methemoglobin
d. Sulfhemoglobin
d. Sulfhemoglobin
Hemoglobin bound to carbon monoxide with an affinity 100 times that of oxygen is:
a. Carboxyhemoglobin
b. Hemiglobincyanide (cyanmethemoglobin)
c. Methemoglobin
d. Oxyhemoglobin
a. Carboxyhemoglobin
Hemoglobin containing iron in a ferric, rather than a ferrous, state is:
a. Methemoglobin
b. Oxyhemoglobin
c. Reduced hemoglobin
d. Sulfhemoglobin
a. Methemoglobin
The form of hemoglobin that normally transports carbon dioxide from the tissues to the lungs is:
a. Carboxyhemoglobin
b. Methemoglobin
c. Oxyhemoglobin
d. Reduced hemoglobin
d. Reduced hemoglobin
The form of hemoglobin that normally transports oxygen from the lungs to the tissues is:
a. Carboxyhemoglobin
b. Methemoglobin
c. Oxyhemoglobin
d. Reduced hemoglobin
c. Oxyhemoglobin
The MCV (SI) units of measurement are:
a. Femtoliters (fL)
b. Picograms (pg)
c. Grams per deciliter (g/dL)
d. Percent (%)
a. Femtoliters (fL)
The MCH (SI) units of measurement are:
a. Femtoliters (fL)
b. Picograms (pg)
c. Grams per deciliter (g/dL)
d. Percent (%)
b. Picograms (pg)
The MCHC (SI) units of measurement are:
a. Femtoliters (fL)
b. Picograms (pg)
c. Grams per deciliter (g/dL)
d. Percent (%)
c. Grams per deciliter (g/dL)
The approximate life span in peripheral blood of a mature, inactivated B lymphocyte is:
a. Months to years
b. 120 days
c. 1 to 3 days
d. About 10 hours
a. Months to years
The approximate life span in peripheral blood of a neutrophil (PMN) is:
a. 120 days
b. 1 to 3 days
c. About 10 hours
d. Less than 8 hours
c. About 10 hours
Which of the following cells is lymphoid in nature?
a. B cells
b. Basophils
c. Eosinophils
d. Neutrophils
a. B cells
The anticoagulant of choice for a complete blood count (CBC) is:
a. EDTA
b. Heparin
c. Sodium citrate
d. Oxalate
a. EDTA
The use of daily hemoglobin control solution with automated equipment will detect which of the following?
a. Accuracy of the measuring device used
b. Deterioration of the hemoglobin reagent
c. Technical skill of the technologist
d. Both a and b
d. Both a and b
What is the unit of measurement for hematocrit (conventional)?
a. Cells×10^9 per liter
b. Cells×10^12 per liter
c. Grams per deciliter
d. Liters per liter
e. Percent
d. Liters per liter
What is the unit of measurement for hemoglobin?
a. Cells×10^9 per liter
b. Cells×10^12 per liter
c. Grams per deciliter
d. Liters per liter
e. Percent
c. Grams per deciliter
What is the unit of measurement for packed cell volume (SI units)?
a. Cells×10^9 per liter
b. Cells×10^12 per liter
c. Grams per deciliter
d. Liters per liter
e. Percent
e. Percent
What is the unit of measurement for platelet count?
a. Cells×10^9 per liter
b. Cells×10^12 per liter
c. Grams per deciliter
d. Liters per liter
e. Percent
b. Cells×10^12 per liter