Chapter 21 - Lymphatic and Immune Systems

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The Immune System The primary defense against disease – Infectious, especially – Specific Centered around the activity of lymphocytes – Other cells, too. Neutrophil with Bacillus anthracis
Lymphocytes Agranulocytes - large nuclei and small amount of cytoplasm Function in identification and inactivation/destruction of pathogens Types of Lymphocytes 1. T Cells - cellular immunity - specific for previously identified pathogens. AKA “cytotoxic cells.” 2. B Cells - humoral immunity – become plasma cells, which produce antibodies specific to the antigen or pathogen; memory cells for future exposures 3. NK (Natural Killer) cells - non-specific, provide immunological surveillance, recognition of “non-self”
Page 1 and 2: Chapt 21: The Lymphatic and Immune
Page 3 and 4: Overview of the Lymphatic System Ly
Page 5 and 6: Lymph Capillaries Thin walled endo
Page 7 and 8: Lymph Capillaries Located everywhe
Page 9 and 10: Lymph capillaries converge to becom
Page 11 and 12: 1. Lymph Nodes ~ 500 ( 1mm to 25 mm
Page 13 and 14: Important example: Axillary Drainag
Page 15 and 16: Lymphoid Tissue Connective tissue
Page 17 and 18: 3. Spleen Largest lymphoid organ, l
Page 19: Bone Marrow: Lymphopoiesis Lymphocy
Page 23 and 24: 5 subclasses of Igs: 1. IgG: main A

Chapter 21 - Lymphatic and Immune Systems

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