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30 Cards in this Set
- Front
- Back
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What is the purpose of measuring the PCV?
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To tell if the animal is anemic or not and to determine the percent of RBCs circulating in the peripheral blood at the time of collection
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List three common measurements of the red blood cells
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PVC - %
Total protein- g/dl Unopette- RBC/mm^3 |
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Lipemia
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Fat in the blood - has a cloudy pinkish color
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Hemolysis
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red/pink color
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Icterus
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Yellowish color, liver problems
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When performing a WBC count and/or a platlet count why is it recommended to let the unopette sit for 10 minutes prior to charging the hemacytometer?
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This allows the red blood cells to hemolyze
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On a hemacytometer where is the leukocyte count performed?
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in all 9 the the big squares on the grid (both sides)
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On a hemacytometer where is the platelet count performed?
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only on the middle square of the grid (all 25 boxes)
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What diluent is used in the BD Unopette system for the determination of leukocytes and plalets? What role does the diluent play?
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Ammonium oxalate
it lyses the blood cells |
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What diluent is used in the BD Unopette system for the determination of leukocytes? What role does the diluent play?
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Acetic acid
it lyses the blood cells |
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What precautions must be taken with the Diff Quick stain set?
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~ covers on at all times: evaporate, doesnt spill, or become contaiminated
~ Use them in the correct order |
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Poikilocytosis
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Abnormally shaped erythrocytes
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Anysocytosis
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The RBCs are irregular with a few, unevenly distributed surface projections
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Rouleau formation
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the grouping or erythrocytes in a stack
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Aggulutination
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A grouping of erythrocytes involving the bridging or clumping of RBCs - occurs in an immune-mediated disaorder
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Why do we avoid evaluating the blood smear at the feathered edge
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The cells are too spread apart and also may be broken into fragments and dont correctly represen the blood
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What happens to the blood cells when we heat the slide up the drying process?
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The cells are destroyed
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Will a reticulocyte eventually lose its reticukum? why?
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Yes the reticulocyte will lose its reticukum because within a few days it will mature into a RBC and no longer need the reticulum
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Can one perform a reticulocyte cont on the blood of a horse? Why?
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No because they do not release reticulocytes from the bone marrow even in the face of anemia
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What is thrombocytopenia?
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The presence of relatively few platelets in blood
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What are 3 situations in which thrombocytopenia may occur in a dog or a cat?
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~decreased production
~peripheral destruction ~mediated induced |
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Neutrophil
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seeks out and kills microorganisms, ingests as well
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Band neutrophil
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similar to regular neutrophil but nucleus is horseshoe shaped
immature neutrophil |
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Lymphocyte
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work for immune system, respond to antigens
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Reactive lymphocytes
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immature lymphoid cells contain a nucleolus within the nucleus, usually surrounded by chromatin
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Eosinophils
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respond chemically to bacterial products and complement fragments, control parasitic infection
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Monocytes
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precursors of macrophages, role of imune function
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Basophils
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production of histamine and heparin
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Macrophages
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phagocytisis, antigen processing cells
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Define Passive immunity
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the immunity you receive from the colostrum of your mother or from vaccines. Not permanent.
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