Laboratory Hematology
0.85% - ANSWER historically, microscopists counted RBCs by carefully pipetting a tiny
aliquot of whole blood and mixing it with _____ saline.
1:20 - ANSWER typical dilution in WBC counting
26 - 32 pg - ANSWER Normal value for MCH
26 - 32 pg - ANSWER Normal value for MCH
32 - 36 g/dL - ANSWER Normal valur for MCHC
32 - 36 g/dL - ANSWER Normal valur for MCHC
5 - ANSWER The average human possesses _ liters of blood
540 nm - ANSWER the absorbance or color intensity of the solution is measured in a
spectrophotometer at _________ wavelength
80 - 100 fL - ANSWER Normal value for MCV
80 - 100 fL - ANSWER Normal value for MCV
acute lymphoblastic leukemia - ANSWER most common form of childhood leukemia
Anemia - ANSWER loss of oxygen-carrying capacity, often reflected in an reduced RBC count
or decreased RBC hemoglobin concentration
anisocytosis - ANSWER Extreme RBC volume variability is visible on the Wright-stained
blood film as variation in diameter and is called as ______.
, Chapter 1: An Overview of Clinical
Laboratory Hematology
Anton van Leeuwenhoek - ANSWER in 1674, he made an account of RBCs
anucleate, biconcave, discoid cells - ANSWER morphology of RBCs
Athanasius Kircher - ANSWER in 1657, he described "worms" in the blood
bands - ANSWER less differentiated or less mature neutrophils
basophilia - ANSWER elevated basophil count
Basophils - ANSWER dark purple, irregular cytoplasmic granules that obscure the nucleus
bone marrow aspirates and biopsy specimens - ANSWER collected and stained to analyze
nucleated cells that are the immature precursors to RBCs
buffy coat - ANSWER light-colored layer between RBCs and plasma
chronic lymphocytic leukemia - ANSWER this type of leukemia is more prevalent in people
older than 65 years
coagulation system - ANSWER employs a complex sequence of plasma proteins, some
enzymes and some enzyme cofactors to produce clot formation after blood vessel injury.
Coulter counters - ANSWER The first electronic counter, patented in 1953 by Joseph and
Wallace Coulter of Chicago, Illinois, was used so widely that today automated cell counters are often
called _______
cyanmethemoglobin - ANSWER An aliquot of whole blood is mixed with a measured
volume of Drabkin reagent, hemoglobin is converted to stable ________