03-结缔解说.ppt

第3章 结缔组织 （Connective Tissue ) 本章介绍内容 结缔组织的一般特点及分类 疏松结缔组织（细胞、纤维） 致密结缔组织 脂肪组织 网状组织 间充质细胞 （一）疏松结缔组织 成纤维细胞 ① Fibroblast 成纤维细胞超微结构 EM: Rich in RER, Golgi appatatus and free ribosome Fibroblast---active ---structure: LM: spindle-shaped, small Nucleus:small,dark stained Acidophilic cytoplasma EM: less organelles(较少的细胞器) ---Function: become into fibroblast for repairing ②巨噬细胞(macrophage) ---structure LM round or ovoid-irregular in shape Small and dark nucleus Acidophilic cytoplasm EM: rich in a.??lysosomes b. Phagosomes← phagocytosis pinosomes ←pinocytosis c.??Irregular surface 巨噬细胞扫描电镜图 巨噬细胞吞噬细菌 Function A.?Phagocytosis（吞噬作用） Special phagocytosis: recognize bacterium, virus and foreign cell--异体细胞 Non special: carbon particles, dust and dead cells 炭粒 *Phagosome (pinosome) + primary lysosome →secondary lysosome →remnants (残余体) B. secretion: lysozyme, complement and interleukin-I (IL-1) and interferon(INF) C. antigen presenting function: *capture antigen→processes→+ MHC II molecule (major histocompatibility complex molecule）→ antigen-MHC II complexes→T lymphocytes D. Chemotaxis in inflammatory response 炎性趋化性 肥大细胞脱颗粒示意图 ⑥Undifferentiated Mesenchymal Cell ---structure:similar to fibrocyte ---function: multidifferentiating potential  Undifferentiated mesenchymal cells Granulocyte: neutrophil, eosinophil and basophil Agranulocyte: lymphocyte (B cell, T cell) and monocyte 纤 维 Fibers Collagen fiber Reticular fiber Elastic fiber Elastin ①Collagen fibers (white fibers) Collagen fibers made of collagen type I which are the most numerous fibers in CT. LM: 0.5-10 um in diameter Belt-liked wave and branch to form a network Eosinophilic?