Human Disease Chp.2 Part.2

Chp 2. part 2.
Immunity

Terms

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Suppressor T cells: The type of T cell that controls the immune response.
Cell-mediated immunity: Protection from infection provided by T cells
Humoral immunity: Protection from infection provided by antibodies
Antigen: The foreign element that triggers the immune response.
Memory cells: B lymphocytes that do not become plasma cells but remain dormant until reactivated by the same antigen.
Antibodies: Proteins secreted by plasma cells that aid in defense against infectious agents.
Cytotoxic T cells: One of several types of T cells, often called killer cells because of their capabilities to kill invading organisms.
T lymphocytes: One of two types of lymphocytes that provide cell-mediated immunity and is processed by the thymus gland.
Helper T cells: One of several types of T cells, they help the immune system by increasing the activity of killer cells and stimulating the supressor T cells.
Lymphatic system: Body's immunity it consists of a complex network of thin-walled capillaries carrying lymph fluid, nodes, and organs that help maintain the internal fluid environmental of the body.
B lymphocytes: One of two types of lymphocytes that provide immunity.
Immunoglobulins (lg): Antibodies; bind to foreign antigens and provide protection from infection.
Activated lymphocytes: White blood cells that have been stimulated by antigens which include B and T cells.
plasma cells: Cells that develop from B cells and produce antibodies.

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