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

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

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

What is the primary function of albumin in blood plasma?

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

What is the function of gamma globulins in blood plasma?

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

What is the role of fibrinogen in blood plasma?

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

What percentage of plasma proteins is comprised of albumin?

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

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

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

What is the primary function of cytoplasmic enzymes in RBCs?

<p>Metabolizing glucose and forming ATP (D)</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 (B)</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 (B)</p> Signup and view all the answers

What is the role of ATP in RBCs?

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

What is the cause of Erythroblastosis fetalis?

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

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

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

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

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

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

<p>Aplastic anemia (D)</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 (A)</p> Signup and view all the answers

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