Hematocrit Test and Clinical Significance
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Questions and Answers

What is the specific gravity of red blood cells (rbcs) according to the provided text?

  • 1060
  • 1070
  • 1030
  • 1090 (correct)

What is the principal use of microhematocrite centrifuge mentioned in the text?

  • Separation of plasma from blood
  • Measurement of red blood cell volume (correct)
  • Separation of white buffy layer from red blood cells
  • Measurement of platelet count

Which condition is associated with an increase in packed cell volume (PCV), as mentioned in the text?

  • Dehydration
  • Over-hydration
  • Polycythemia (correct)
  • Anemia

What is the primary function of plasma proteins in relation to rbcs?

<p>Neutralizing charges on the surface of rbcs (A)</p> Signup and view all the answers

What is the mechanism of action of heparin, the anticoagulant used in the experiment described in the text?

<p>Inactivation of antithrombin III (A)</p> Signup and view all the answers

Under which conditions does the erythrocyte sedimentation rate (esr) increase physiologically?

<p>After exercise and following meals (C)</p> Signup and view all the answers

What is the clinical significance of erythrocyte sedimentation rate (esr) as a diagnostic tool?

<p>It can identify the presence of a disease (A)</p> Signup and view all the answers

What is the reversible arrangement of rbcs called due to the neutralization of their negative charges by plasma proteins?

<p>Rouleaux (C)</p> Signup and view all the answers

Which anti-coagulant is used in the experiment mentioned in the text, and how does it work?

<p>Na+ citrate, by neutralizing Ca+2 ions (C)</p> Signup and view all the answers

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