connective tissue slides
DESCRIPTION
TRANSCRIPT
![Page 1: Connective tissue slides](https://reader033.vdocuments.mx/reader033/viewer/2022061219/54ba0b834a795909718b4573/html5/thumbnails/1.jpg)
Connective Tissue
![Page 2: Connective tissue slides](https://reader033.vdocuments.mx/reader033/viewer/2022061219/54ba0b834a795909718b4573/html5/thumbnails/2.jpg)
Function• Bind together, Support & Strengthen organ systems• Protect and insulate internal organs• Compartmentalize structures (skeletal muscles)• Transport system (blood)• Stored energy (adipose)• Immune response (white blood cells)
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Two Main Components• Extra cellular matrix– Consist of protein fiber
and ground substance• Cells– Cells not usually
touching each other– Lots of extracellular
matrix– Well vascularized
CELLS
MATRIXFIBER
GROUND SUBSTANCE
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Cells
• Immature cells called “-blasts”• Mature cells called “-cytes”– Loose & dense CT• fibroblasts, fibrocytes
– Cartilage• chondroblasts, chondrocytes
– Bone • osteoblasts, osteocytes
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Cell Types
• Fibroblasts– Most numerous, secrete fibers
• Macrophages– Type of WBC that phagocytizes
bacteria• Plasma Cells
– From B-lymphocytes, secrete antibodies
• Mast Cells– Secrete histamine, dilates blood
vessels• Adipocytes
– Fat cells, store triglycerides• White Blood Cells (WBC)
– Immune cells that migrate within CT
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MAST CELL
ADIPOSE CELLS
PLASMA CELLS
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The Matrix• Ground Substance
– Fluid, gel, calcified; between cells and fibers• Fibers
– Collagen• Strong, flexible, parallel fibers, resist stretch• Most abundant in body• Tendons and ligaments
– Elastic• Branching, fibrous network, of elastin and
fibrillin; VERY elastic• Skin, blood vessels, lung• Marfan’s Syndrome defective fibrillin gene
– Reticular• Collagen & glycoprotein network• Nerves, smooth muscle, spleen, lymph nodes
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Classification of CT
• Embryonic• Mature– Loose– Dense– Cartilage– Bone– Blood & lymph
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Loose CT
• Areolar
• Adipose
• Reticular
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Dense CT
• Dense regular
• Dense irregular
• Elastic
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Cartilage
• Hyaline
• Fibrocartilage
• Elastic cartilage
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Bone
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Blood & Lymph
Red Blood Cells
Lymphocyte (WBC)
Neutrophil (WBC)
Monocyte (WBC)
Platelets