Chapter 25 clinical laboratory Flashcards
what are the 5 functions of blood?
- distribute oxygen, nutrients, & hormones
- eliminate waste products
- attack infecting organisms
- maintain bodies acid-base
- regulate body temp
what does whole blood consist of?
plasma and the formed elements
what are the formed elements?
- RBC’s (erythrocytes)
- WBC’s (leukocytes)
- platelets (thrombocytes)
erythropoietin is produced by the _____ and stimulates _____
kidneys, erythropoiesis
what is the liquid portion of blood that remains after the clotting proteins and cells have been removed, and how is it different from plasma?
serum, does not contain fibrinogen
what are the 3 most common veins used for blood draw from innermost to outermost?
- basilic
- median cubital
- cephalic
the destruction of red blood cells
hemolysis
a chemically treated substance that reacts a certain way when exposed to certain substances
reagent
what is the proper name for the tube used during a blood draw?
evacuated tube
what is the order of draw?
Yellow
Light blue
Red
Tiger top
Green
Lavender
Gray
Royal blue
what is the max amount of time a tourniquet should be left on?
1 min
what are the additives for each tube used in blood draws?
Y - SPS and ACD
LB - sodium citrate
R - none
T - silicone serum separator
G - heparin
L - EDTA
G - potassium oxalate & sodium fluoride
RB - EDTA or none
what is the ESR test and what is it used for?
erythrocyte sedimentation rate (measures how long RBC’s take to settle)
used for - determining the degree of inflammation in the body
what is the medical term for a bruise?
hematoma
the volume of RBC’s in a sample after it has been centrifuged
hematocrit
