组织学与胚胎学课件：结缔组织
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Connective Tissue
刘佳梅
Component: cell and intercellular substance (fibers and matrix)
Connective tissue: Connective tissue proper Cartilage, bone Blood
1.1 Fibroblasts
1.1 Fibroblasts
EM: RER , Free Ribosomes Golgi apparatus
Function: synthesis of fibers and amorphous ground substance
1.1 Fibroblasts
Fibrocytes: inactive fibroblasts
Origin: mesenchyme
Connective tissue proper
LCT
DCT
CT
Adiຫໍສະໝຸດ Baiduose tissue
Reticular tissue
Ⅰ. Loose connective tissue
intercelullar substance
fiber matrix
collagen fibers
1. Dense regular connective tissue the collagen fibers are parallel to each other. Fibroblasts are located between fibrous bundles.
2. Dense irregular connective tissue
Function: elasticity
(3) Reticular fibers
Component: type III collagen Function: give support to individual cells
3. Ground substance
3.1 proteoglycan(蛋白聚糖)
Proteoglycan are composed of a core protein associated with 4 main glycosaminoglycans(氨基聚糖).
3.2 fibronectin 3.3 tissue fluid
Ⅱ. Dense connective tissue
1.2 Macrophages
1.3 Plasma cells
LM:
1.3 Plasma cells
Origin: B lymphocyte Function: produce antibodies
1.4 Mast cells
LM:
1.4 Mast cells
EM: Function: involved in allergic reactions
1.5 Fat cells 1.6 Undifferentiated cells 1.7 Leukocytes
2．Fiber
（１）collagen fiber
collagen fibril: type I collagen
（2） Elastic fibers
Component: elastin and microfibrils
elastic fibers reticular fibers
LCT
cells
fibroblast macrophage plasma cell mast cell adipocyte white blood cell undifferentiated mesenchymal cell
1. Cells of the connective tissue
The collagen fibers are arranged in bundles without a definite orientation.
3. Elastic Tissue
Elastic tissue is composed of bundles of thick, parallel elastic fibers.
1.2 Macrophages
LM: irregular shape with pseudopodia, small and dark nucleus, strong acidophilic cytoplasm.
1.2 Macrophages
Origin: monocytes Function: Chemotaxins Phagocytosis Secretion Immune reaction
Ⅲ.Adipose tissue
Ⅳ. Reticular tissue
reticular cells reticular fibres ground substances.
弹性纤维分子示意图
刘佳梅
Component: cell and intercellular substance (fibers and matrix)
Connective tissue: Connective tissue proper Cartilage, bone Blood
1.1 Fibroblasts
1.1 Fibroblasts
EM: RER , Free Ribosomes Golgi apparatus
Function: synthesis of fibers and amorphous ground substance
1.1 Fibroblasts
Fibrocytes: inactive fibroblasts
Origin: mesenchyme
Connective tissue proper
LCT
DCT
CT
Adiຫໍສະໝຸດ Baiduose tissue
Reticular tissue
Ⅰ. Loose connective tissue
intercelullar substance
fiber matrix
collagen fibers
1. Dense regular connective tissue the collagen fibers are parallel to each other. Fibroblasts are located between fibrous bundles.
2. Dense irregular connective tissue
Function: elasticity
(3) Reticular fibers
Component: type III collagen Function: give support to individual cells
3. Ground substance
3.1 proteoglycan(蛋白聚糖)
Proteoglycan are composed of a core protein associated with 4 main glycosaminoglycans(氨基聚糖).
3.2 fibronectin 3.3 tissue fluid
Ⅱ. Dense connective tissue
1.2 Macrophages
1.3 Plasma cells
LM:
1.3 Plasma cells
Origin: B lymphocyte Function: produce antibodies
1.4 Mast cells
LM:
1.4 Mast cells
EM: Function: involved in allergic reactions
1.5 Fat cells 1.6 Undifferentiated cells 1.7 Leukocytes
2．Fiber
（１）collagen fiber
collagen fibril: type I collagen
（2） Elastic fibers
Component: elastin and microfibrils
elastic fibers reticular fibers
LCT
cells
fibroblast macrophage plasma cell mast cell adipocyte white blood cell undifferentiated mesenchymal cell
1. Cells of the connective tissue
The collagen fibers are arranged in bundles without a definite orientation.
3. Elastic Tissue
Elastic tissue is composed of bundles of thick, parallel elastic fibers.
1.2 Macrophages
LM: irregular shape with pseudopodia, small and dark nucleus, strong acidophilic cytoplasm.
1.2 Macrophages
Origin: monocytes Function: Chemotaxins Phagocytosis Secretion Immune reaction
Ⅲ.Adipose tissue
Ⅳ. Reticular tissue
reticular cells reticular fibres ground substances.
弹性纤维分子示意图