Immune response

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The Immune System is the Third Line of Defense Against Infection

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ANATOMY OF THE IMMUNE SYSTEM ,[object Object],[object Object],[object Object]

ANATOMY OF THE IMMUNE SYSTEM ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Antibodies are Produced by B Lymphocytes

Antibodies are Proteins that Recognize Specific Antigens

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Consequences of Antibody Binding

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Intact Skin is an Effective Barrier Against Most Pathogens

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Phagocytic Cells: Macrophages (Monocytes), Neutrophils, and Eosinophils (Macrophages)

Both Classical and Alternative Complement Pathways Trigger the Cleavage of C3

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Natural killer cells (NK cells) ,[object Object],[object Object],[object Object]

Mast cells ,[object Object],[object Object],[object Object],[object Object]

Structures of the Immune System ,[object Object],[object Object],[object Object]

Organs of The Immune System The organs of the immune system are stationed throughout the body. They are known as lymphoid organs because they are concerned with the growth, development, and deployment of lymphocytes white blood cells that are key operatives of the immune system.

Functions of the Lymph System ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Adenoid Tonsil Lymph nodes Spleen Peyer’s patches (small intestine) Appendix Lymphatic vessels Masses of lymphocytes and macrophages Tissue cells Lymphatic vessel Blood capillary Lymphatic capillary Interstitial fluid Lymph node Interstitial fluid bathing the tissues, along with the white blood cells in it, continually enters lymphatic capillaries. 1 Figure 43.5 Fluid inside the lymphatic capillaries, called lymph, flows through lymphatic vessels throughout the body. 2 Within lymph nodes, microbes and foreign particles present in the circulating lymph encounter macrophages, dendritic cells, and lymphocytes, which carry out various defensive actions. 3 Lymphatic vessels return lymph to the blood via two large ducts that drain into veins near the shoulders. 4

Lymph System ,[object Object],[object Object],[object Object],[object Object],[object Object]

Lymphoid organs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Lymphatic System ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Lymph capillaries ,[object Object],[object Object],[object Object],[object Object]

Lymph capillaries ,[object Object],[object Object],[object Object]

Lymphatic Vessels ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Lymphatic Vessels ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Lymph Nodes ,[object Object],[object Object],[object Object],[object Object]

Lymph Nodes ,[object Object],[object Object],[object Object]

Lymph Node Function ,[object Object],[object Object],[object Object],[object Object]

Lymph ducts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],20.6a

Spleen ,[object Object],[object Object],[object Object],[object Object],[object Object]

Spleen ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Tonsils ,[object Object],[object Object],[object Object],[object Object]

Tonsils ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Tonsils ,[object Object],[object Object],20.12

Thymus ,[object Object],[object Object],[object Object],[object Object]

Thymus ,[object Object],[object Object],[object Object]

Features of Immune System ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Cells and tissues of the immune system ,[object Object],[object Object],[object Object],[object Object],[object Object]

Cells and Tissues of the Immune System ,[object Object],[object Object]

B Cell Formation ,[object Object],[object Object],[object Object],[object Object],[object Object]

T Lymphocytes (T cells) ,[object Object],[object Object],[object Object],[object Object]

T Lymphocytes (T cells) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Blood ,[object Object],[object Object],[object Object],[object Object]

Blood Cells ,[object Object],[object Object],[object Object]

Erythrocytes ,[object Object],[object Object],[object Object],[object Object],[object Object]

Leukocytes ,[object Object],[object Object],[object Object]

Lymphocytes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Thrombocytes ,[object Object],[object Object],[object Object],[object Object]

Plasma ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Functions of the Immune System ,[object Object],[object Object],[object Object],[object Object],[object Object]

Immune response

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Immune response