Introduction to Hematology - Blood Functions
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Questions and Answers

What is the main function of platelet factors in the blood?

  • To regulate body temperature
  • To initiate blood clotting and minimize blood loss (correct)
  • To transfer water to and from tissues
  • To destroy invading microorganisms

    • What is the primary role of leukocytes or WBCs in the blood?

  • To initiate blood clotting
  • To regulate body temperature
  • To destroy invading microorganisms and cancer cells (correct)
  • To transfer water to and from tissues

    • What is the name of the liquid part of the blood that contains various substances?

  • Blood cells
  • Platelets
  • Serum
  • Plasma (correct)

    • What is the function of blood in regulating body temperature?

    <p>Transfer of heat to the skin</p> Signup and view all the answers

    What is the name of the system of blood vessels that blood circulates through?

    <p>Closed system of blood vessels</p> Signup and view all the answers

    What is the total volume of blood in an average adult?

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

    What is the main function of red blood cells?

    <p>To carry oxygen from the lungs to the tissues</p> Signup and view all the answers

    What is the average number of red blood cells per cubic millimeter in normal men?

    <p>5.2 million</p> Signup and view all the answers

    What is the primary function of albumin in blood plasma?

    <p>To maintain osmotic balance</p> Signup and view all the answers

    What is the function of gamma globulins in blood plasma?

    <p>To produce antibodies</p> Signup and view all the answers

    What is the role of fibrinogen in blood plasma?

    <p>To clot blood</p> Signup and view all the answers

    What percentage of plasma proteins is comprised of albumin?

    <p>60-80%</p> Signup and view all the answers

    What is the average lifespan of RBCs in the circulatory system?

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

    What is the primary function of cytoplasmic enzymes in RBCs?

    <p>Metabolizing glucose and forming ATP</p> Signup and view all the answers

    What is the result of a deficiency of polypeptide chain in Thalasemia?

    <p>Decrease in concentration of Hb</p> Signup and view all the answers

    What is the effect of the progressive decrease in metabolic activity of RBCs with time?

    <p>RBCs become more fragile</p> Signup and view all the answers

    What is the role of ATP in RBCs?

    <p>Maintaining the structure of the cell membrane</p> Signup and view all the answers

    What is the cause of Erythroblastosis fetalis?

    <p>Antibodies from the mother</p> Signup and view all the answers

    What is the name of the ratio between plasma and cellular elements in the blood?

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

    What is the main organ responsible for producing red blood cells during the middle trimester of gestation?

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

    What is the term for a deficiency of red blood cells?

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

    What is the name of the process by which all types of blood cells are produced?

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

    What is the term for the loss of function of bone marrow?

    <p>Aplastic anemia</p> Signup and view all the answers

    What is the name of the sac where primitive, nucleated red blood cells are produced in early embryonic life?

    <p>Yolk sac</p> Signup and view all the answers

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