Two Types Of Immunity

The body can control against foreign particles either by cell-mediated immunity or antibody mediated immunity. In antibody mediated immunity, foreign particles called antigens (typically proteins or carbohydrates on the surface of invading cells) stimulate B cells to become plasma cells and memory B cells. The plasma cells produce antibodies and these react with the antigens stimulating their destruction.

In cell-mediated immunity, the reacting cells are called helper T cells and they cause the activation of and the differentiation of other T cells into memory T cells and effector or cytotoxic T cells. The cytotoxic T cells can recognize foreign cells and destroy them. The steps in immune reactions are much more complex than this but this description provides a general understanding of the process. Fill in the illustration using the terms provided. Color the different cells and antibodies using one type of color (various types of orange for B cells) and another for T cells.

Antibody-mediated immunity

Cell-mediated immunity

Cells Cell Mediated Immunity

Antigen-bearing cell

Destroyed cell

Answer Key: a. Antigens, b. B cell, c. Memory B cell, d. Antibodies, e. Plasma cell, f. Helper T cell, g. Activated T cell, h. Effector (Cytotoxic) T cell, i. Memory T cell

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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  • blake scott
    What are the two types of immunity?
    2 years ago

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