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Topic 11 AQs
Terms in this set (113)
What are the two components of whole blood? What percentage of whole blood does each component constitute?
Plasma and formed elements.
Plasma: 55%; Formed elements: 45%.
What are the three components of plasma? What percentage of plasma does each component constitute?
What are the functions of albumin in plasma?
Albumins are the major contributors to plasma osmotic pressure (i.e., blood colloid osmotic pressure) and they are also nonspecific transporters of lipid and steroid hormones in the plasma.
What are the different types of globulins?
Types of globulins:
What is an immunoglobulin? What are their functions?
Immunoglobulins are part of the immune system and they neutralize pathogens.
What is the function of fibrinogen?
Fibrinogen is a soluble protein in the plasma from which fibrin is produced. It helps in the formation of blood clots when it is converted to its insoluble form - fibrin.
What is a zymogen?
Zymogen is an inactive enzyme.
What are the different types of regulatory proteins in the plasma?
What is the function of electrolytes in the plasma?
Electrolytes are essential for vital cell function and osmotic pressure regulation.
What are some organic nutrients in the plasma? Organic wastes?
Fatty acids Carbohydrates Amino acids.
Urea Creatinine Uric acid.
What are the primary functions of plasma? Secondary?
Fluid volume balance
What is the difference between plasma and serum?
Serum is that part of blood which is similar in composition with plasma but excludes clotting factors.
Under what circumstance would one get a plasma transfusion?
Plasma transfusions are used to increase plasma volume, as during a severe hemorrhage.
What is a hematocrit (Hct)? How is a Hct determined?
Hematocrit is a test to determine the percent of RBCs in circulation.
Hct is determined by microcentrifugation followed by dividing the volume of packed red cells by the total volume of the sample.
What are the three layers that a whole blood sample separates into during microcentrifugation? What is located in each layer?
Buffy coat (WBCs/platelets)
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