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Unformatted text preview: Red pulp contains RBC White pulp similar to lymphoid nodules Spleen functions include Removal of abnormal blood cells and other blood components Storage of iron Initiation of the specific immune response Lymphatic system and body defenses Nonspecific defenses Do not distinguish one type of threat from another 7 types Specific defenses Protect against particular threats Depend upon the activation of lymphocytes Nonspecific Defenses Nonspecific Defenses, Physical barriers Keep hazardous organisms outside the body Includes hair, epithelia, secretions of integumentary and digestive systems (Part 1 - Physical Barriers) Nonspecific Defenses, Phagocytes Remove cellular debris and respond to invasion by foreign pathogens Monocyte-macrophage system - Fixed and free Microphages Neutrophils and eosinophils Move by diapedesis Exhibit chemotaxis...
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