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18 Questions

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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?

Antibody binding to a pathogen Signup and view all the answers

What is the function of chemokines?

To stimulate cell migration Signup and view all the answers

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

By helping the B cell make antibodies Signup and view all the answers

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

To communicate between immune cells Signup and view all the answers

How do activated dendritic cells communicate with T cells?

By presenting antigens to T cells and releasing cytokines Signup and view all the answers

What is the primary function of MHC-I molecules?

To present endogenous antigens to T cells Signup and view all the answers

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

To present antigens to T cells Signup and view all the answers

What are chemokines primarily responsible for?

Directing cell movement Signup and view all the answers

What is the primary function of T cell receptors?

To recognize and bind to antigens Signup and view all the answers

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

To engulf and eliminate pathogens Signup and view all the answers

What triggers the activation of dendritic cells in the skin?

Recognition of pathogen associated molecular patterns Signup and view all the answers

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

To present antigens to T cells Signup and view all the answers

What is the primary function of helper T cells?

To activate B cells and produce antibodies Signup and view all the answers

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