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Immunology Chapter 15

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Questions and Answers

What is the primary function of dendritic cells in the immune system?

To activate T cells through antigen presentation (correct)
To kill infected cells through antibody-dependent cellular cytotoxicity
To produce antibodies against antigens
To recognize and eliminate tumor cells

What is the main difference between Tε and Tч cells?

Tε cells are involved in cell-mediated immunity, while Tч cells are involved in humoral immunity
Tε cells recognize antigen in a MHC-restricted manner, while Tч cells recognize antigen in a non-MHC-restricted manner (correct)
Tε cells recognize antigen in a non-MHC-restricted manner, while Tч cells recognize antigen in a MHC-restricted manner
Tε cells are activated by dendritic cells, while Tч cells are activated by B cells

What is the role of central tolerance in the immune system?

To recognize and eliminate tumor cells
To prevent the activation of autoreactive T cells (correct)
To produce antibodies against antigens
To eliminate infected cells through antibody-dependent cellular cytotoxicity

What is the primary function of the lymphatic system in immunity?

To transport antigens to lymphoid organs for immune recognition (C) Signup and view all the answers

What is the primary function of natural killer cells?

To recognize and eliminate tumor cells (A) Signup and view all the answers

What is the significance of central and peripheral tolerance?

To eliminate self-reactive T cells (B) Signup and view all the answers

How do TCRs contribute to the immune response?

By recognizing MHC molecules (C) Signup and view all the answers

What is the outcome of antibody-antigen binding?

Neutralization of pathogens (C) Signup and view all the answers

What is the role of CD markers in the immune response?

To distinguish between T cells and B cells (B) Signup and view all the answers

What is the significance of clonal selection and expansion?

To generate a large number of antigen-specific immune cells (B) Signup and view all the answers

Study Notes

Immunity Overview

Cell-mediated and humoral immunity can be compared and contrasted
Central tolerance and peripheral tolerance are crucial for immune system function

Immune Response

Primary response and secondary response can be defined and differentiated
Antibody-antigen binding leads to protective outcomes
The lymphatic system plays a vital role in immunity

Clonal Selection and Expansion

The process of clonal selection and expansion can be outlined
T-cell receptors (TCRs), MHC molecules, and CD markers are essential components

T Cell Activation

Dendritic cells activate T cells
Tε and Tч cells can be compared and contrasted in terms of antigen recognition
Tε cells activate B cells

Immunoglobulins

There are five classes of immunoglobulins that can be compared and contrasted

NK Cells

NK cells have two distinct protective roles in the immune system

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Description

Test your knowledge of the immune system! This quiz covers cell-mediated and humoral immunity, tolerance, antibody-antigen binding, and the role of lymphatic system and immune cells in protecting the body.