Hematology Lecture 1: Introduction to Blood
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Questions and Answers

What is the primary function of leukocytes or WBCs in the protection function of blood?

  • Regulating body temperature
  • Transferring water to and from tissues
  • Initiating blood clotting and minimizing blood loss
  • Destroying invading microorganisms and cancer cells (correct)

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

  • 3 liters
  • 7 liters
  • 10 liters
  • 5 liters (correct)

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

  • Initiating blood clotting and minimizing blood loss (correct)
  • Transferring water to and from tissues
  • Destroying pathogenic substances
  • Regulating body temperature

What is the main component of blood that contains proteins, enzymes, nutrients, waste, hormones, electrolytes, and gases?

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

What is the function of blood in regulating pH levels?

<p>Interacting with acids and bases (D)</p> Signup and view all the answers

What is the term used to describe the blood cells and platelets in the formed elements of blood?

<p>Enclosed in plasma membrane (D)</p> Signup and view all the answers

What is the ratio of plasma to cellular elements in a healthy individual?

<p>55% plasma to 45% cellular elements (C)</p> Signup and view all the answers

During the middle trimester of gestation, which organ is the main site for production of red blood cells?

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

What is the term for the production of all types of blood cells?

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

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

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

What is the cause of blood loss anemia?

<p>Chronic blood disease (B)</p> Signup and view all the answers

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

<p>Bone marrow aplasia (C)</p> Signup and view all the answers

What is the main function of hemoglobin in red blood cells?

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

What is the difference in the average number of red blood cells per cubic millimeter between men and women?

<p>Men have 0.7 million more red blood cells than women (A)</p> Signup and view all the answers

What is the function of albumin in blood plasma?

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

What is the function of gamma globulins in blood plasma?

<p>To produce immunoglobulins (A)</p> Signup and view all the answers

What is the percentage of hemoglobin in every 100 ml of red blood cells?

<p>34% (C)</p> Signup and view all the answers

What is the function of fibrinogen in blood plasma?

<p>To stop bleeding by clotting (B)</p> Signup and view all the answers

What is the primary cause of erythroblastosis fetalis?

<p>Antibodies from the mother destroying red cells in the baby (A)</p> Signup and view all the answers

What is the main function of cytoplasmic enzymes in red blood cells?

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

What is the consequence of the deficiency of polypeptide chain in thalassemia?

<p>Decreased concentration of hemoglobin (D)</p> Signup and view all the answers

What is the average lifespan of red blood cells in the circulatory system?

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

What is the role of ATP in maintaining red blood cell function?

<p>Supporting the transport of ions across the cell membrane (B)</p> Signup and view all the answers

What is the consequence of the deterioration of red blood cell metabolic systems over time?

<p>Increased fragility of the red blood cells (D)</p> Signup and view all the answers

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