Aphy 201 Lab Exam 2 Updated Actual Questions And Correct Answers

APHY 201 LAB EXAM 2 UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS

Question:
1. agglutination

Answer:
Clumping of microorganisms or blood cells, typically due to an antigen-antibody
interaction.
Means that the marker is present.

Question:
2. unoppette system

Answer:
collects and dilutes the blood to perform a RBC count

Question:
3. a grid that counts the RBC after they have been collected and diluted by the
unoppette.




Answer:
hemocytometer

Question:
4. stick your finger, put blood on paper, match blood color with the color scale
paper.
uses a color hemoglobin scale to estimate the amount of hemoglobin in the
blood
Grams of Hb per dL of blood. gm/dL




Answer:
Tallquist test

, Question:
5. a procedure for determining the ratio of the volume of packed red blood cells to
the volume of whole blood by centrifuging a minute quantity of blood in a
capillary tube coated with heparin.
results are read directly below buffy coat




Answer:
microhematocrit

Question:
6. MCV= (Hemetocrit)(1000)/ RBC count

Answer:
Calculate MCV (volume of RBC, norm: 90pL)

Question:
7. MCH= (Hb)(10)/ RBC count

Answer:
Calculate MCH (average mass of Hb in one RBC, norm 30pg)

Question:
8. MCHC= Hb/Hematocrit

Answer:
Calculate MCHC (measure of concentration of Hb in a RBC, norm: 33%)

Question:
9. microcytic

Answer:
This word means a small RBC. MCV <90 pL

Question:
10. hypochromic

Answer:
Pertaining to deficiency in color; decrease in hemoglobin in red blood cells. MCH
<30 pg