TERMS QUESTIONS & ACCURATE
PASSED ANSWERS 100%
plasma - Correct Answer ✔✔ constitutes 55% of the blood's volume
blood cells and platelets - Correct Answer ✔✔ constitute 45% of the blood's volume
males: 4.7-6.1 million/mm3
females: 4.2-5.4 million/mm3 - Correct Answer ✔✔ normal values of RBCs
clinical significance of RBCs - Correct Answer ✔✔ increase in dehydration, with
polycythemia, at high altitudes, and with hypoxia
clinical significance of RBCs - Correct Answer ✔✔ decreased in anemia, leukemia, and
post hemorrhage
males: 14-18 g/dL
females: 12-16 g/dL - Correct Answer ✔✔ normal values of hemoglobin
clinical significance of hemoglobin - Correct Answer ✔✔ increased in polycythemia,
dehydration, chronic obstructive lung disease
clinical significance of hemoglobin - Correct Answer ✔✔ decreased in anemia,
hemorrhage
hemoglobin - Correct Answer ✔✔ measure of total amount of _____________ in
peripheral blood
hematocrit - Correct Answer ✔✔ measure of the percentage of the total blood volume
that is made up by the RBCs
males: 42%-52%
females: 37%-47% - Correct Answer ✔✔ normal values of hematocrit
clinical significance of hematocrit - Correct Answer ✔✔ increased with severe burns,
shock, severe dehydration, and polycythemia
clinical significance of hematocrit - Correct Answer ✔✔ decreased with severe blood
loss, leukemia, and anemia
erythrocyte sedimentation rate ESR - Correct Answer ✔✔ rate at which RBCs settle out
of a tube of unclotted blood in 1 hour
, male: 0-15 mm/hr
female: 0-20 mm/hr - Correct Answer ✔✔ normal values erythrocyte sedimentation rate
ESR
clinical significance of erythrocyte sedimentation rate ESR - Correct Answer ✔✔
increased in tissue destruction; indicates infection when results are compared with
elevation in WBC count; a fairly reliable indicator of the course of disease and therefore
used to monitor disease therapy, especially for inflammatory autoimmune disease
0.5%-2% - Correct Answer ✔✔ normal values of reticulocyte count
clinical significance of reticulocyte count - Correct Answer ✔✔ increased in bone
marrow hyperactivity and hemorrhage
clinical significance of reticulocyte count - Correct Answer ✔✔ decreased in hemolytic
disease
150,000-400,000/mm3 - Correct Answer ✔✔ normal values of platelet
clinical significance of platelet - Correct Answer ✔✔ increased in granulocytic leukemia
clinical significance of platelet - Correct Answer ✔✔ decreased in thrombocytopenia or
aplastic anemia
11-12.5 seconds - Correct Answer ✔✔ normal values of prothrombin time PT
prothrombin time PT - Correct Answer ✔✔ rapidity of blood clotting
clinical significance of prothrombin time PT - Correct Answer ✔✔ detects plasma
clotting defects, screens for coagulation, and monitors warfarin (Coumadin) therapy;
possible critical values greater than 20 seconds
0.7-1.8 - Correct Answer ✔✔ normal values of international normalized ratio INR
clinical significance of international normalized ratio INR - Correct Answer ✔✔
therapeutic ____ usually considered to be 2-3.5; possible critical values >3.5
60-70 seconds - Correct Answer ✔✔ normal values of partial thromboplastin time PTT
partial thromboplastin time PTT - Correct Answer ✔✔ fibrin clot formation
clinical significance of partial thromboplastin time PTT - Correct Answer ✔✔ detects
coagulation defects of the intrinsic factor system and deficiency of plasma clotting; used
for monitoring the appropriate dose of heparin; possible critical values >100 seconds