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</p> Signup and view all the answers

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

    <p>Hemoglobin</p> Signup and view all the answers

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

    <p>Erythropoiesis</p> Signup and view all the answers

    What percentage of plasma proteins are albumin?

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

    Which type of globulin is synthesized by B-lymphocytes?

    <p>Gamma</p> Signup and view all the answers

    What is the primary function of globulins?

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

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

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

    What is the typical lifespan of a red blood cell?

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

    What is the primary function of erythropoietin?

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

    What is the normal concentration of hemoglobin in adult males?

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

    What is the function of the globin part of hemoglobin?

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

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

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

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

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

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