Hematology I Flashcards
What type of drug is Warfarin?
Anti-coagulant
% breakdown of Plasma, Buffy coat, and Erythrocytes:
Plasma - 55%
Buffy coat -
What layers of blood are considered the “formed elements”?
RBC's Buffy coat (includes leukocytes, platelets, and thrombocytes)
Name 3 Plasma Proteins:
Albumins
Globulins
Fibrinogen
What is serum?
Plasma minus clotting factors
Name 3 things that make up the Plasma?
Water
Solutes
Plasma Proteins
What fraction of body weight is blood?
8%
How much blood in an adult body?
4-6 Liters
What is the normal amount of RBC’s in a hematocrit?
45%
A low hematocrit suggests…
A hig hematocrit suggests…
Anemia
Polycythemia
What is the best method for evaluating and identifying immature and abnormal cells in the blood?
Blood smear
A normal blood smear is spaced…
evenly
What are the two functions of the RBC biconcave disc?
Increase surface area
Increase flexibility
Are platelets cells?
No.
*fragments fo megakaryocytes
Where do megakaryocytes come from?
Break off in bone marrow
T/F
A platelet plug is another name for a blood clot
False
Precursors to clots (but sometimes all yo need)
What does a stained neutrophil nucleus look like?
3-5 lobes
Thin strands chromatin connecting
What is the most common type of WBC?
Neutrophils
The defining characteristic of a neutrophil is…
define unequivocally
Complex shape of nucleus
T/F
Neutrophils lack granules
False
small granules in cytoplasm
What is the primary function of neutrophils?
Defense against Bacteria and Fungi
What formed element usually has a 2 lobed nucleus?
Eosinophil
What is the main function of eosinophil?
Parasitic defense
*many dark staining granules
What is the appearance of the nucleus in Basophils?
Granulocytes?
2-3 lobes
Deeply blue or red-violet