Exam 1 Lab cards

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Exam 1 Lab cards
2015-02-11 11:11:56

Blood analysis & histology
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  1. fx of blood
    • transp nutrients & metabolic wastes
    • regulating pH & osmolarity
    • restricting blood loss
    • defending against disease
    • regulating body temp
  2. formed elements
    • cells & cell fragments incl:
    • RBC/erythrocytes
    • WBC/ leukocytes
    • Platelets/thrombocytes
  3. Why do a hematocrit
    determine if RBC are in normal range
  4. capillary action
    ability of blood to be pulled in to hematocrit tube
  5. centrifuge
    slotted machine to spin blood down into packed cell and plasma
  6. how do you calculate a hematocrit
    measure of RBC, incl buffy coat, divided by total height of whole blood
  7. hemacytometer
    device capable of performing a cell count: counts red and total WBC in body fluids other than blood; cerebrospinal fluid, synovial fluid, serous fluid & amniotic fluid. Also platelets, sperm, & stem cells
  8. anemia
    too low RBC
  9. polycythemia/hypoxia
    too high RBC
  10. standard WBC slide stain
    Wright's stain
  11. Normoblasts
    developmental stage which nucleus is still present in RBC. normally found in bone marrow & should never be released into peripheral circulation
  12. Reticulocytes
    developmental stage of RBC immediately after nucleus has beenreleased. contain darl stained granules that are remnants of RNA and ribosomes. normal range is .5-2.0% of ttl erythrocytes population.
  13. sickle cell anemia
    low oxygen conditions cause RBC's to assume sickle shape
  14. differential count
    count of WBC to determine relative number of different types of WBC in circulating blood. Count of 100 to determine %
  15. megakaryocyte
    • produce platelets/thrombocytes in bone marrow.
    • fx-involved in hemostasis, control of blood loss
  16. thrombocytopenia
    too low platelet count
  17. thrombocytosis
    too high platelet count
  18. antigen
    generally carbohydrates/proteins part of cell's membrane
  19. antibodies
    • protein molecules fx to bind to antigen
    • named for specific antigen it binds to
  20. How to test for presence of antigens
    using a purified solution of known antibodies-antisera
  21. agglutination
    blood cells will bind together to form an antigen-antibody complex
  22. 2 most important compatibilities in a transfusion are:
    • antigens of the donor
    • antibodies of the recipient