AN SC 310 Lab

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AN SC 310 Lab
2012-11-28 14:52:31
AN SC 310

Blood Analysis
Show Answers:

  1. What is Hematocrit?
    The % of RBCs in a sample of whole blood
  2. What is the buffy coat?
    A layer of WBCs btwn the heavier RBC layer and lighter plasma
  3. What is anemia?
    • Deficient levels of O2 in blood.
    • Decreased capacity to carry O2/CO2
  4. What are the 5 types of anemia and what are they caused by?
    Iron deficiency anemia - inability to produce hemoglobin due to low iron levels (heme contains an atom of Fe)

    Aplastic anemia - bone marrow cannot produce adequate RBCs

    Pernicious anemia - lack of Vitamin B12 necessary for cell division

    Sickle cell anemia - incorrect folding of hemoglobin

    Hemorrhagic anemia - rapid loss of blood
  5. What is Polycythemia and what are some reasons this may occur?
    Overproduction of RBCs; significant increase in RBCs

    Living at high altitudes, strenuous athletic activity, tumors in bone marrow
  6. What is Erythrocyte Sedimentation Rate?
    Measurement of the settling of RBCs in a vertical, stationary tube of blood during 1 hour
  7. What are each of these called and what % are they found in humans? (on average)
    • 1 - plasma 54-55%
    • 2 - buffy coat (WBCs + platelets) < 1%
    • 3 - RBCs 45%
  8. What % of BW is blood?
  9. What os the normal pH of blood?
    7.35 - 7.45
  10. What is the composition of blood?
    • Plasma (proteins, enz's, electrolytes, etc...)
    • Cells (RBCs, WBCs, platlets)
  11. What are the 3 types of cells in blood (scientific names), and what is their function?
    • Erythrocytes - carry O2/CO2
    • Leukocytes - immune defense
    • Thrombocytes - clotting
  12. What is the function of plasma?
    Nutrition, transportation, osmotic pressure, acid/alkaline balance
  13. What are the different blood types, their antigens, and antibodies?