Hematology Test 2 Flashcards
define anisocytosis
red blood cells with variation in size
define poikilocytosis
increase in abnormal red blood cells of any shape
What is a band or stab more commonly known as?
immature neutrophils
define hemoconcentration
increase in non-filterable blood components and a decrease in plasma
define hematopoiesis
blood cell formation
define erythropoiesis
red blood cell production
define erythropoietin
hormone released by kidneys to stimulate RBC production
define anemia
a condition marked by a deficiency of red blood cells
define polycythemia
increase in red blood cells
At what angle do you spread the blood for blood smears?
25-30 degrees
What is CBC?
Complete Blood Count
The calculation of cellular elements of the blood
What is a crenated cell?
When blood cells shrink
What do differential tests measure?
proportion of WBC’s in whole blood
what is fibrinogen?
causes cells to stick together (clotting) and creates rouleaux effect
What does hematocrit measure?
volume of red blood cells in whole blood
What is a hemocytoblast?
common stem cell that forms lymphoid stem cells and myeloid stem cells
define hemoglobin
iron-binding molecule that carries and transports oxygen to cells
List ESR methods
Westergren, Wintrobe, Landao and Cutter
What is Von Willebrand’s disease?
a bleeding disorder caused by low levels of clotting protein in the blood - lacking factor VIII
What is Von Willebrand’s disease?
a bleeding disorder caused by low levels of clotting protein in the blood - lacking factor VIII
What is MCH and its unit of measurement
Mean Corpuscular Hemoglobin - measured in picograms
What is MCHC and its unit of measurement
Mean Corpuscular Hemoglobin Concentration - g/dL
What is MCV and its unit of measurement
Mean Corpuscular Volume - cubic micrometers
What is intrinsic pathway affected by?
Heparin
What is intrinsic pathway affected by?
Heparin
What is the life span of platelets
9-10 days
What is thrombocytopenia?
platelet shortage
What is histamine released by?
Basophils
