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Questions and Answers
What is the primary function of the immune system?
What type of immunity involves the production of antibodies?
What is the term for the ability of an antigen to trigger an immune response?
Which of the following is an example of a primary lymphoid organ?
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What is the term for an excessive or abnormal immune response?
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What is the term for an immune response against self-antigens?
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Study Notes
Overview of Immunology
- Study of the immune system and its functions
- Deals with the defense against infectious agents and disease
Branches of Immunology
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Innate Immunology: study of non-specific, immediate defense mechanisms
- Physical barriers (skin, mucous membranes)
- Cellular components (neutrophils, macrophages)
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Adaptive Immunology: study of specific, delayed defense mechanisms
- Humoral immunity (antibodies)
- Cell-mediated immunity (T-cells)
Immune Response
- Recognition: pathogen recognition by immune cells
- Activation: activation of immune cells (e.g., T-cells, B-cells)
- Elimination: elimination of pathogens by immune cells
- Memory: immune system "remembers" pathogens for future responses
Cells of the Immune System
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Leukocytes (white blood cells):
- Neutrophils
- Lymphocytes (B-cells, T-cells)
- Monocytes
- Eosinophils
- Basophils
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Antigen-Presenting Cells (APCs):
- Dendritic cells
- Macrophages
- B-cells
Immune System Organs
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Primary Lymphoid Organs:
- Bone marrow
- Thymus
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Secondary Lymphoid Organs:
- Spleen
- Lymph nodes
- Lymphoid tissues (e.g., tonsils, Peyer's patches)
Immunological Concepts
- Immunogenicity: ability of an antigen to trigger an immune response
- Immunotolerance: inability to respond to an antigen
- Autoimmunity: immune response against self-antigens
- Hypersensitivity: excessive or abnormal immune response
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Description
Learn about the immune system, its functions, and branches of immunology, including innate and adaptive immunity, immune response, and cells and organs of the immune system.
