Loose Connective Tissue(L.C.T)
Loose Connective Tissue ( L.C.T)
CharacteristicsThemostcommontypeofC.T.ThemostwidelydistributedinthebodyItsstructureappearssponge-like(areolartissue)AgreatervarietyofcellsandfiberthanotherC.T.Properties-generallyflexiblebutnotveryresistantto stretching.Functionas:binding othertissue to each other;nutrients providing;wounding healing and destruction foreign matter
Characteristics： The most common type of C.T. The most widely distributed in the body. Its structure appears sponge-like (areolar tissue) A greater variety of cells and fiber than other C.T. Properties-generally flexible but not very resistant to stretching. Function as : binding other tissue to each other; nutrients providing; wounding healing and destruction foreign matter
199Astretchedpreparationof areolar connectivetissue.The pinkfibers of different thicknesses are collagenous (or white) fibersThe dark, thin, more tortuous fibers are elastic (or yellow)fibers.Mostofthenucleibelongtofibroblasts
A stretched preparation of areolar connective tissue. The pink fibers of different thicknesses are collagenous (or white) fibers. The dark, thin, more tortuous fibers are elastic (or yellow) fibers. Most of the nuclei belong to fibroblasts
Components ofL.C.T(Cells（立）Fibers()GroundsubstanceFibroblastsCollagenglycoproteinElasticMacrophagesproteoglycanPlasmacellsReticulartissue fluid*Mast cellsFat cells (adipocyte)Undifferentiated mesenchymal cellsleukocytesTissue fluid:is formed by ultrafiltration of blood throughthe walls of capillaries consists of water, small moleculesand ions
Components of L.C.T. (Ⅰ) Cells (Ⅱ)Fibers (Ⅲ)Ground substance Fibroblasts Collagen glycoprotein Macrophages Elastic proteoglycan Plasma cells Reticular tissue fluid* Mast cells Fat cells (adipocyte) Undifferentiated mesenchymal cells leukocytes Tissue fluid: is formed by ultrafiltration of blood through the walls of capillaries consists of water, small molecules, and ions
(I) CellsThereare7typesof cellspresentinLcT>Fixedcells:1.fibroblasts: 2.fat cells: 3. undifferentiatedmesenchymal cells>Wanderingcells:4.macrophages;5.plasmacells; 6.mast cells;7.leukocytes
(Ⅰ) Cells Fixed cells: 1. fibroblasts; 2. fat cells; 3. undifferentiated mesenchymal cells Wandering cells: 4. macrophages; 5. plasma cells; 6. mast cells; 7. leukocytes There are 7 types of cells present in LCT