Hematology - Blood Composition and Functions
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Questions and Answers

What is the primary function of white blood cells in the blood?

  • To maintain blood in a fluid state
  • To transport oxygen
  • To defend the body against infection and disease (correct)
  • To regulate blood pH

What is the normal percentage of blood occupied by cells in adult males?

  • 30-40%
  • 60-70%
  • 50-60%
  • 40-50% (correct)

What is the term for the prevention of blood loss and maintenance of blood in a fluid state?

  • Hemostasis (correct)
  • Homeostasis
  • Erythropoiesis
  • Hemoglobin

What is the approximate volume of plasma in the blood?

<p>2.5-3.5 L (A)</p> Signup and view all the answers

What is the name of the protein in red blood cells that carries oxygen?

<p>Hemoglobin (A)</p> Signup and view all the answers

What is the term for the process of red blood cell production?

<p>Erythropoiesis (D)</p> Signup and view all the answers

What percentage of plasma proteins are albumin?

<p>55% (A)</p> Signup and view all the answers

Which type of globulin is synthesized by B-lymphocytes?

<p>Gamma (D)</p> Signup and view all the answers

What is the primary function of globulins?

<p>To act as immunoglobulins or antibodies (B)</p> Signup and view all the answers

During which trimester of intrauterine life does hematopoiesis occur in the liver and spleen?

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

What is the typical lifespan of a red blood cell?

<p>120 days (A)</p> Signup and view all the answers

What is the primary function of erythropoietin?

<p>To stimulate replication of stem cells (C)</p> Signup and view all the answers

What is the normal concentration of hemoglobin in adult males?

<p>14.5-18 g/dL (A)</p> Signup and view all the answers

What is the function of the globin part of hemoglobin?

<p>To bind to polypeptide chains (D)</p> Signup and view all the answers

What is the abnormal type of hemoglobin associated with sickle cell anemia?

<p>Hb S (A)</p> Signup and view all the answers

What is the normal percentage of Hb A1c in total hemoglobin?

<p>5% (B)</p> Signup and view all the answers

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