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Biochem Immune Ch1

Biochemistry of the Immune System 2011

What is the immune response? The collective and coordinated response of the cells and molecules of the immune system to the introduction of foreign substances.
What is the physiological function of the immune system? To defend against infections microbes.
What are considered foreign substances? Microbes, such as bacteria and viruse; macromolecules, such as proteins and polysaccharides; and cells, such as cancer cells, grafts and cells infected by viruses.
What is immunology? The study of immunity, and cellular and molecular events that occur after an organism encounters microbes and other foreign macromolecules.
What are the two types of immunity? Innate and Adaptive
What is innate immunity? Consists of cellular and biochemical defense mechanisms that are in place even before infection; poised to respond rapidly to infections; responds the same way to repeated infections.
Innate immunity responds to what foreign substances? Microbes
What are the principle components of innate immunity? Epithelial barriers, phagocytes, NK cells and complement.
What is adaptive immunity? Consists of immune responses to antigens that are specific molecules; increases in magnitude and defensive capabilities with each successive exposure (memory).
Adaptive immunity responds to what foreign substances? Infectious agents (microbes) and non-microbial substances.
What are the two types of adaptive immunity? Humoral immunity and cell-mediated immunity.
What are the main components of humoral immunity? B lymphocytes and antibodies.
What are the main components of cell-mediated immunity? T lymphocytes
Created by: Julie1414