Thymus and T-cell Development Quiz
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Questions and Answers

What is the primary site where T-cells become immunologically competent?

  • Bone Marrow
  • Thymus (correct)
  • Spleen
  • Lymphatic organs

Which of the following is not a function of T-cells?

  • Promotion of antibody production (correct)
  • Production of lymphokines
  • Inhibition of macrophage migration
  • Contribution to cell-mediated immunity

Which of the following is NOT a type of lymphokine produced by T-cells?

  • Lymphotoxin
  • Erythropoietin (correct)
  • Tumor Necrosis Factor
  • Interleukin

Which organ plays a primary role in the growth and differentiation of lymphocytes?

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

What is the primary function of heparin and histamine in the immediate hypersensitivity reaction?

<p>Dilate blood vessels and increase vessel permeability (B)</p> Signup and view all the answers

What is the main role of antibodies produced by plasma cells in the immune response?

<p>Bind to receptors on basophil plasma membranes (D)</p> Signup and view all the answers

Why do platelets appear somewhat smaller in the microscope?

<p>Due to the division of cytoplasm into hyalomere and granulomere (D)</p> Signup and view all the answers

What is the primary function of the cytoskeletal fibers in platelets?

<p>Facilitate platelet movement (B)</p> Signup and view all the answers

What is the role of plasma-borne substances like antibodies at a site of infection?

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

How do antibodies induce the release of basophil granule contents?

<p>By binding to receptors on basophil plasma membranes (C)</p> Signup and view all the answers

What is the primary function of histamine in the immediate hypersensitivity reaction?

<p>Increase vessel wall permeability (D)</p> Signup and view all the answers

What is the primary function of heparin in the immediate hypersensitivity reaction?

<p>Prevent blood coagulation (D)</p> Signup and view all the answers

What is the role of antibodies produced by plasma cells in the immune response?

<p>Bind to receptors on basophils (C)</p> Signup and view all the answers

What is the primary function of the cytoskeletal fibers in platelets?

<p>Function in platelet movement (D)</p> Signup and view all the answers

Why do platelets appear somewhat smaller in the microscope?

<p>Their cytoplasm hardly stains (D)</p> Signup and view all the answers

What is the primary site where T-cells become immunologically competent?

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

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