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23 Cards in this Set

  • Front
  • Back

The hummoral immune response depends on which cells

B and TH cells

The fact that the body does not normally mount an immune response to the molecules in food is an example of

Immune tolerance

Foreign particles circulating in the blood are filtered by the


Active immunity

An immunity that occurs as a result of the activity of the body's own cells rather than from antibodies acquired from an external source

Adaptive immunity

A specific immune response that occurs after exposure to an antigen either from a pathogen or a vaccination


A protein that is produced by plasma cells after stimulation by an antigen; also known as an immunoglobulin


A macromolecule that reacts with cells of the immune system and which may or may not have a stimulatory effect

Antigen-presenting cell APC

An immune cell that detects, engulfs, and informs the adaptive immune response about an infection by presenting the processed antigen on its cell surface

B cell

A lymphocyte that matures in the bone marrow

Cell mediated immune response

An adaptive immune response that is controlled by T cells

Cytotoxic T lymphocyte Tc

An adaptive immune cell that directly kills infected cells via enzymes, and that releases cytokines to enhance the immune response

Dendritic cell

An immune cell that processes antigen material and presents it on the surface of its cell in MHC class II molecules and induces an immune response in other cells

Effector cell

A lymphocyte that has differentiated, such as a B cell, plasma cell, or cytotoxic T cell

Helper T lymphocyte Th

A cell of the adaptive immune system that binds APCs via MHC class II molecules and stimulates B cells or secretes cytokines to initiate the immune response

Humoral immune response

The adaptive immune response that is controlled by activated B cells and antibodies

Immune tolerance

An acquired ability to prevent an unnecessary or harmful immune response to a detected foreign body known not to cause disease


The watery fluid present in the lymphatic circulatory system that bathes tissue and organs with protective white blood cells and does not contain erythrocytes

Memory cell

An antigen specific B or T lymphocyte that does not differentiate into an effector cell during the primary immune response but that can immediately become and effector cell on reexposure to the same pathogen

Major histocompatibility class MHC II molecule

A protein found on the surface of antigen presenting cells that signals to immune cells whether the cell is normal or is infected or cancerous; it provides the appropriate template into which antigens can be loaded for recognition by lymphocytes

Passive immunity

An immunity that does not result from the activity of the body's own immune cells but by transfer of antibodies from one individual to another

Primary immune response

The response of the adaptive immune system to the first exposure to an antigen

Secondary immune response

The response of the adaptive immune system to a second or later exposure to an antigen mediated by memory cells

T cell

A lymphocyte that matures in the thymus gland