RBC TEST EXAM
#1 QUESTIONS
AND ANSWERS
What is an erythrocyte? - Answers-A red blood cell
Why does a RBC have a limited life span? - Answers-No nucleus which means no cell
functions. (Membranes become less flexible and become destroyed by spleen)
Erythropoietic process - Answers-1. Gradual Decrease in size
2. Decrease in basophillic cytoplasm (Gets lighter as it gets older)
3. Increase in density of the chromatin (nucleus gets darker)
4. Loss of nucleus
Write what you know about Diapedisis - Answers-Proestrogen bleeding occurs in
response to estrogen levels. First, high estrogen levels makes the dog go into
proestrus, then the RBC squeeze thru the pores of the capillary walls.
What is erythropiesis? - Answers-Making of RBC
Where does erythrosiesis take place? - Answers-Bone marrow
Order of precursor cells - Answers-MPSC, Rubriblast, prorubricyte, rubricyte,
metarubricyte, reticulocyte, erythrocyte
What does an erythrocyte do? - Answers-Carrier of O2 and CO2
Where is RBCs removed? - Answers-By the RES (reticulo-endothelial system)
What is the composition of hemoglobin - Answers-4 heme molecules contain 1 iron
atom each
, Globin - two pairs of polypeptide chains
Porphyrin Ring
What are polypeptide chains made of? - Answers-Amino Acids
Compare a PCV to Machinery - Answers-PCV - Cheap, fast, pretty accurate, for small
amount of blood
Machinery - More accurate, reproducible, fast
What is plasma trapping? - Answers-When the centrifuge is spinning too slowly and
traps the plasma and other cells and falsely elevates the PCV
What does ESR stand for? - Answers-Erythrocyte Sedimentation Rate
What is ESR? - Answers-RBC settling by gravity
Is ESR used in Vet Medicine? - Answers-No, Because it is too time consuming
What happens to PCVs in young animals? - Answers-Young animals may have anemia
due to poor iron diets in nursing animals
What is normocytic? - Answers-Normal size
What is macrocytic? - Answers-Larger cell
What is microcytic ? - Answers-Smaller cell
What is polychromasia? - Answers-Multicolored - purple
What is normochromic? - Answers-normal color
What is hypochromic? - Answers-pale in color
What is hyperchromic? - Answers-dark in color
What is anisocytosis? - Answers-Abnormal variation in cell size
What is poikilocytosis? - Answers-abnormal variation in cell shape
What does MCHC stand for? - Answers-Mean Corpuscular Hemoglobin Concentration
What does MCHC measure for? - Answers-Oxygen capability of blood
What is Howell-Jolly Bodies? - Answers-Remnants of nuclear material after the nucleus
has been extruded
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