HUBS 191 Lecture 32: Immunology III

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Questions and Answers

What type of cells exclusively express MHC-II?

  • All immune cells
  • Antigen presenting cells (correct)
  • Dendritic cells and B cells
  • Nucleated cells

What is the primary function of cytokines?

  • Stimulate cell migration
  • Control growth and activity of immune cells (correct)
  • Activate the complement system
  • Present exogenous antigens

How do activated Helper T cells assist B cells?

  • By producing antibodies
  • By making cytokines that bind to receptors on B cell membranes (correct)
  • By recognizing exogenous antigens
  • By expressing MHC-II

What triggers the classical pathway of complement activation?

<p>Antibody binding to a pathogen (D)</p> Signup and view all the answers

What is the function of chemokines?

<p>To stimulate cell migration (A)</p> Signup and view all the answers

How do complement fragments bound to antigen help activate B cells?

<p>By helping the B cell make antibodies (B)</p> Signup and view all the answers

What is the primary function of cytokines in the immune system?

<p>To communicate between immune cells (C)</p> Signup and view all the answers

How do activated dendritic cells communicate with T cells?

<p>By presenting antigens to T cells and releasing cytokines (B)</p> Signup and view all the answers

What is the primary function of MHC-I molecules?

<p>To present endogenous antigens to T cells (C)</p> Signup and view all the answers

What is the role of antigen-presenting cells in the immune system?

<p>To present antigens to T cells (C)</p> Signup and view all the answers

What are chemokines primarily responsible for?

<p>Directing cell movement (B)</p> Signup and view all the answers

What is the primary function of T cell receptors?

<p>To recognize and bind to antigens (B)</p> Signup and view all the answers

What is the primary function of phagocytic cells in the immune response?

<p>To engulf and eliminate pathogens (A)</p> Signup and view all the answers

What triggers the activation of dendritic cells in the skin?

<p>Recognition of pathogen associated molecular patterns (A)</p> Signup and view all the answers

What is the role of major histocompatibility complex (MHC) molecules?

<p>To present antigens to T cells (A)</p> Signup and view all the answers

What is the primary function of helper T cells?

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

What is the role of cytokines and chemokines in the immune response?

<p>To communicate between immune cells (B)</p> Signup and view all the answers

What is the final outcome of the immune response?

<p>Elimination of pathogens from the body (A)</p> Signup and view all the answers

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