Lec. 3 White Blood Cells: Resistance to Infection
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Questions and Answers

What is the primary function of basophils?

  • Providing chronic immunity against infections
  • Squeezing through blood capillaries
  • Phagocytosis
  • Releasing histamine and containing receptors for IgE (correct)

What is the primary role of lymphocytes in the body?

  • Phagocytosis of pathogens
  • Squeezing through blood capillaries
  • Releasing histamine for inflammation
  • Providing chronic immunity against infections (correct)

Which of the following is NOT a property of white blood cells (WBCs)?

  • Diapedesis
  • Erythropoiesis (correct)
  • Ameboid motion
  • Chemotaxis

What is the function of heparin in basophils?

<p>Increase healing processes (D)</p> Signup and view all the answers

Which of the following is a type of agranular leukocyte?

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

What is the primary role of granulocytes and monocytes in the body?

<p>Ingesting and destroying invading organisms through phagocytosis (D)</p> Signup and view all the answers

Which of the following statements about white blood cells is correct?

<p>They are responsible for fighting infections and toxic agents in the body. (C)</p> Signup and view all the answers

What is the condition called when the white blood cell count is lower than normal?

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

Which of the following is NOT a location where infectious agents can normally be found in the body?

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

What is the process by which white blood cells destroy invading bacteria or viruses?

<p>Both phagocytosis and antibody/lymphocyte production (B)</p> Signup and view all the answers

Which of the following conditions is characterized by an abnormally high white blood cell count?

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

What is the normal range for white blood cell count in a healthy individual?

<p>4,000 - 11,000 cells per cubic millimeter (A)</p> Signup and view all the answers

Which of the following is a function of neutrophils?

<p>Phagocytosis and inflammation response (D)</p> Signup and view all the answers

What is the typical percentage range of neutrophils in the body?

<p>50-70% (B)</p> Signup and view all the answers

Which type of white blood cell has a multilobed nucleus that typically takes an 'S' shape?

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

What is the plasma half-life of neutrophils?

<p>10-20 hours (B)</p> Signup and view all the answers

Which type of white blood cell remains in the blood for 24 hours before migrating to tissues?

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

What is the primary function of eosinophils?

<p>Both b and c (B)</p> Signup and view all the answers

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