UAMS Hematology exam 5 review
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Perks of automation - CORRECT ANSWER - Speed, accuracy, precision, requires small
blood volume
Perks of manual - CORRECT ANSWER - Low cost, good for low work volume, fewer
artifacts and spurious results
automated cell counting - CORRECT ANSWER - includes electrical resistance (counting
cells by observing flow of electricity) and flow cytometry (cells in narrow tube detected by laser)
Impedance - CORRECT ANSWER - Detects and measures changes in electrical resistance
between two electrodes as cells pass through a sensing aperture
Measurable voltage changes are - CORRECT ANSWER - plotted on frequency
distribution graphs
Light Scatter - CORRECT ANSWER - Blood is hydrodynamically focused by sheathing
fluid which moves cells forward to the center of the column
How do cells pass through the optical detectors in light scatter? - CORRECT ANSWER -
single file
Light scatter measurement is based on - CORRECT ANSWER - The degree and nature of
the light scatter
, WBC histogram - CORRECT ANSWER - provides a means of comparing the size and
population of a patient's WBCs with normal population and is used as a screening tool to detect
the presence of hematologic diseases
35-90 fL on a WBC histogram - CORRECT ANSWER - Lymphs
90-160fL on WBC histogram - CORRECT ANSWER - Mononuclear cells such as
monocytes, blasts, immature granulocytes, and reactive lymphs
160-450fL on WBC histogram - CORRECT ANSWER - Granulocytes
RBC histogram - CORRECT ANSWER - reflects the normal size of erythrocytes or any
other particles in the erythrocyte size range and will coincide directly with the MCV
Particles ___________ in RBC chamber are counted - CORRECT ANSWER - >36fL
Platelet Histogram - CORRECT ANSWER - illustrates the size of the platelets and helps
identify the giant platelets and thrombocytopenia
Particles between ________ are considered in the platelet histogram - CORRECT
ANSWER - 2-20fL
What does the process of platelet histogram include? - CORRECT ANSWER - All
platelets while excluding small red cells
How much blood does the pump draw for a CBC - CORRECT ANSWER - 100 uL
What is the different baths in automated CBCs - CORRECT ANSWER - RBC and WBC
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Perks of automation - CORRECT ANSWER - Speed, accuracy, precision, requires small
blood volume
Perks of manual - CORRECT ANSWER - Low cost, good for low work volume, fewer
artifacts and spurious results
automated cell counting - CORRECT ANSWER - includes electrical resistance (counting
cells by observing flow of electricity) and flow cytometry (cells in narrow tube detected by laser)
Impedance - CORRECT ANSWER - Detects and measures changes in electrical resistance
between two electrodes as cells pass through a sensing aperture
Measurable voltage changes are - CORRECT ANSWER - plotted on frequency
distribution graphs
Light Scatter - CORRECT ANSWER - Blood is hydrodynamically focused by sheathing
fluid which moves cells forward to the center of the column
How do cells pass through the optical detectors in light scatter? - CORRECT ANSWER -
single file
Light scatter measurement is based on - CORRECT ANSWER - The degree and nature of
the light scatter
, WBC histogram - CORRECT ANSWER - provides a means of comparing the size and
population of a patient's WBCs with normal population and is used as a screening tool to detect
the presence of hematologic diseases
35-90 fL on a WBC histogram - CORRECT ANSWER - Lymphs
90-160fL on WBC histogram - CORRECT ANSWER - Mononuclear cells such as
monocytes, blasts, immature granulocytes, and reactive lymphs
160-450fL on WBC histogram - CORRECT ANSWER - Granulocytes
RBC histogram - CORRECT ANSWER - reflects the normal size of erythrocytes or any
other particles in the erythrocyte size range and will coincide directly with the MCV
Particles ___________ in RBC chamber are counted - CORRECT ANSWER - >36fL
Platelet Histogram - CORRECT ANSWER - illustrates the size of the platelets and helps
identify the giant platelets and thrombocytopenia
Particles between ________ are considered in the platelet histogram - CORRECT
ANSWER - 2-20fL
What does the process of platelet histogram include? - CORRECT ANSWER - All
platelets while excluding small red cells
How much blood does the pump draw for a CBC - CORRECT ANSWER - 100 uL
What is the different baths in automated CBCs - CORRECT ANSWER - RBC and WBC
