2．规则致密结缔组织肌腱为其典型代表。胶原纤维束平行而紧密排列，束间有沿其长轴成行排列的细胞，称腱细胞，它是一种变形的成纤维细胞，胞体伸出许多翼状突起，插入纤维束间并将其包裹。细胞的横切面呈星形，核位于细胞的中央。3．弹性组织（elastic tissue）是富于弹性纤维的致密结缔组织，如项韧带、黄韧带、声带等。由粗大的弹性纤维平行排列成柬，并以细小的分支连接成网，其间有胶原纤维和成纤维细胞。体内有很多部位的结缔组织是疏松与致密结缔组织之间的过渡形态，其结构特点是：由较细密的胶原纤维、弹性纤维和网状纤维交织成网，其中含有较多的细胞成分、小血管和神经等。如消化道、呼吸道粘膜固有层的结缔组织即属于此种，常称其为细密的结缔组织。窝组织（areolar tissue），其特点是细胞种类较多，纤维较少，排列稀疏。疏松结缔组织在体内广泛分布，位于器官之间、组织之间以至细胞之间，起连接、支持、营养、防御、保护和创伤修复等功能。疏松结缔的细胞种类较多，其中包括成纤维细胞、巨噬细胞、浆细胞、肥大细胞、脂肪细胞、未分化的间充质细胞。此外，血液中的白细胞，如嗜酸性粒细胞、淋巴细胞等在炎症反应时也可游走到结缔组织内。各类细胞的数量和分布随疏松结缔组织存在的部位和功能状态而不同。致密组位，这种特性称为趋化性（c细菌emotaxis）。这类化学物质称为趋化细菌子（c细菌emotactic factor），如补体C5a、细菌的产物、炎症组织的变性蛋白等。（2）吞噬作用：巨噬细胞具有强大的吞噬能力，包括非特异性吞噬作用和特异性吞噬作用。巨噬细胞经趋化性定向运动抵达病变部位时，即伸出伪足并粘附和包围细菌、异物、衰老伤亡的细胞等，进而摄入胞质内形成吞噬体或吞饮小泡。吞噬体、吞饮小泡与初级溶酶体融合，形成次级溶酶体，异物颗粒被溶酶体酶消化分解后，成为残余体。
2. Regular dense connective tissue tendon is its typical representative. Collagen fiber bundles parallel and closely arranged between the beam along the long axis in line with the cells, called tendon cells, which is a deformed fibroblasts, cell body protruding a number of wing-like protrusions, inserted between the fiber bundle and wrapped. The cross section of the cell is star-shaped, with the nucleus located in the center of the cell. 3. Elastic tissue (elastic tissue) is a dense connective tissue rich in elastic fibers such as ligament, ligamentum flavum, vocal cords and so on. By the thick elastic fibers arranged in parallel to Cambodia, and a small branch connected into a network, with collagen fibers and fibroblasts. The body has many parts of the connective tissue is the transition between loose and dense connective tissue, its structural features are: the more dense collagen fibers, elastic fibers and reticular fibers interwoven into a network, which contains more cellular components, small Blood vessels and nerves. Such as the digestive tract, respiratory lamina propria of connective tissue belonging to this type, often called the fine connective tissue. Areolar tissue, which is characterized by more cell types, fewer fibers, and sparsely arranged. Loose connective tissue widely distributed in the body, located between organs, between tissues and even between cells, from the connection, support, nutrition, defense, protection and trauma repair and other functions. Loose connective cells more types, including fibroblasts, macrophages, plasma cells, mast cells, fat cells, undifferentiated mesenchymal cells. In addition, the blood of white blood cells, such as eosinophils, lymphocytes, etc. can also walk in the inflammatory response to connective tissue. The number and distribution of various types of cells vary with the location and functional status of loose connective tissue. Dense group of bits, a feature called chemotaxis (c bacteria emotaxis). Such chemicals are called chemotactic factors such as complement C5a, bacterial products, and denatured proteins from inflammatory tissues. (2) phagocytosis: macrophages have a strong phagocytosis, including non-specific phagocytosis and phagocytosis. When macrophages reach the lesion site through the directional movement of chemotaxis, the macrophages reach the pseudopodia and adhere to and enclose the cells such as bacteria, foreign bodies and senescent cells, which then ingest into the cytoplasm to form phagosomes or swallow vesicles. Phagocytosis, swallowed vesicles and primary lysosome fusion, the formation of secondary lysosomes, foreign particles by lysosomal enzyme digestion and decomposition, become a residue.

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