2．規(guī)則致密結締組織肌腱為其典型代表。膠原纖維束平行而緊密排列，束間有沿其長軸成行排列的細胞，稱腱細胞，它是一種變形的成纖維細胞，胞體伸出許多翼狀突起，插入纖維束間并將其包裹。細胞的橫切面呈星形，核位于細胞的中央。3．彈性組織（elastic tissue）是富于彈性纖維的致密結締組織，如項韌帶、黃韌帶、聲帶等。由粗大的彈性纖維平行排列成柬，并以細小的分支連接成網，其間有膠原纖維和成纖維細胞。體內有很多部位的結締組織是疏松與致密結締組織之間的過渡形態(tài)，其結構特點是：由較細密的膠原纖維、彈性纖維和網狀纖維交織成網，其中含有較多的細胞成分、小血管和神經等。如消化道、呼吸道粘膜固有層的結締組織即屬于此種，常稱其為細密的結締組織。窩組織（areolar tissue），其特點是細胞種類較多，纖維較少，排列稀疏。疏松結締組織在體內廣泛分布，位于器官之間、組織之間以至細胞之間，起連接、支持、營養(yǎng)、防御、保護和創(chuàng)傷修復等功能。疏松結締的細胞種類較多，其中包括成纖維細胞、巨噬細胞、漿細胞、肥大細胞、脂肪細胞、未分化的間充質細胞。此外，血液中的白細胞，如嗜酸性粒細胞、淋巴細胞等在炎癥反應時也可游走到結締組織內。各類細胞的數量和分布隨疏松結締組織存在的部位和功能狀態(tài)而不同。致密組位，這種特性稱為趨化性（c細菌emotaxis）。這類化學物質稱為趨化細菌子（c細菌emotactic factor），如補體C5a、細菌的產物、炎癥組織的變性蛋白等。（2）吞噬作用：巨噬細胞具有強大的吞噬能力，包括非特異性吞噬作用和特異性吞噬作用。巨噬細胞經趨化性定向運動抵達病變部位時，即伸出偽足并粘附和包圍細菌、異物、衰老傷亡的細胞等，進而攝入胞質內形成吞噬體或吞飲小泡。吞噬體、吞飲小泡與初級溶酶體融合，形成次級溶酶體，異物顆粒被溶酶體酶消化分解后，成為殘余體。
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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