Chapter 10The Immune System
The Immune System Chapter 10
Function of immune systemTo defend the organism, protect body from invasion anddamage by foreign cells, microbes, viruses and parasites.1.By humoral immune responses against foreignsubstances (antigens)2.By cell-mediatedimmune responses againstmicroorganism, tumor and transplanted cells,and virus-infectedcells
Function of immune system To defend the organism, protect body from invasion and damage by foreign cells, microbes, viruses and parasites. 1. By humoral immune responses against foreign substances (antigens) 2. By cell-mediated immune responses against microorganism, tumor and transplanted cells, and virusinfected cells
Componentss of immuneesystemT:Th、TsToBLymphocyteNKMacrophageImmunocyteAntigen presenting cellPlasma cellLymphoid tissueLymphoid organs: thymus, lymph node,spleen, tonsil
Components of immune system Lymphoid tissue Lymphocyte T：Th、Ts、Tc B NK Macrophage Antigen presenting cell Plasma cell Immunocyte Lymphoid organs: thymus, lymph node, spleen, tonsil
AdenoidTonsilleft subclauianveinThymusLymph nodesThoracic ductSpleenPeyer'spatchAppendixBone marrow
Immunocyte(Lymphocyte,Macrophage,Antigenpresenting cell,Plasma cell)DLymphocytethe principal cells of the immune systemtheir ability to recognize and respond to foreigncells and substancesthree main types: T, B and NK lymphocytesa. T-lymphocytes65%-75%, are primarily responsible for cell-mediated immunity
Immunocyte (Lymphocyte, Macrophage, Antigen presenting cell, Plasma cell) ① Lymphocyte the principal cells of the immune system their ability to recognize and respond to foreign cells and substances three main types: T, B and NK lymphocytes a. T-lymphocytes 65%~75%, are primarily responsible for cellmediated immunity