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Cellular Elements of a Peripheral Smear
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Biology
06/24/2011
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Term
RBC Size
 Definition
6-8 microns
Term
RBC survival
 Definition
120 days
Term
RBC Function
 Definition
deliver O2, remove CO2
Term
Reticlocyte size
 Definition
9-10 microns
Term
Reticulocyte survival
 Definition
1-2 days
Term
Reticulocyte function
 Definition
mature to RBCs by loss of ribosomes and mitochondria
Term
Neutrophil size
 Definition
12-15 microns
Term
Neutrophil survival
 Definition
7-10 hours
Term
Neutrophil function
 Definition
phagocytic, mediate inflammation
Term
Eosinophils
 Definition
12-15 microns
Term
Eosinophil survival
 Definition
4-8 hours
Term
Eosinophil function
 Definition
phagocytic; antibody dependent parasite damage; regulate hypersensitivity rxns
Term
Basophil size
 Definition
12-15 microns
Term
Basophil survival
 Definition
~60 hours
Term
Basophil function
 Definition
Important in hypersensitivity rxns
Term
Monocyte size
 Definition
12-30 microns
Term
Monocyte survival
 Definition
70 hours
Term
Monocyte function
 Definition
Phagocytic; migrate into tissue=macrophage
Term
Lymphocyte size
 Definition
7-20 microns
Term
Lymphocyte survival
 Definition
4-10 years
Term
Lymphocyte function
 Definition
T cells-->major type in peripheral blood
B-cells
NK-cells
Term
Platelet size
 Definition
2-5 microns
Term
Platelet survival
 Definition
9-12 days
Term
Platelet function
 Definition
Term
Platelet function
 Definition
clot formation
Term
Define Hematocrit
 Definition
height of the column of packed RBCs compared to the the height of the column of whole blood
Term
Hematocrit formula
 Definition
Hct=(RBC count)x(MCV)
Term
Define MCV
 Definition
average volume of a RBC
Term
MCV formula
 Definition
MCV=(Hctx10)/(RBC countx10^6)
Term
Defne MCH
 Definition
Average weight of Hgb per RBC
Term
MCH formula
 Definition
MCH=(Hgbx10)/(RBC countx10^6)
Term
Define MCHC
 Definition
Average percent concentration of Hgb per RBC
Term
MCHC formula
 Definition
MCHC=Hgb/Hct
Term
Define RDW
 Definition
Quantitative measure of the variation in the size of the RBCs
Term
Define anisocytosis
 Definition
variation in cell size
Term
Define poikilocytosis
 Definition
variation in cell shape
Term
Define normochromia
 Definition
normal Hgb color
Term
Define hypochromia
 Definition
decrease in Hgb color
Term
Define polychromasia
 Definition
Bluish color to RBCs
Term
Define Reticulocyte Production Index (RPI)
 Definition
measure of marrow's ability to respond to anemia
Term
What does incrased polychromasia indicate
 Definition
A less mature RBC will have more polychromasia