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Connective tissue, Types of Connective Tissues, Connective Tissue,…
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Connective Tissue
Components
Extracellular fibers
Collagen: Strong, flexible, most abundant.
Elastic: Stretchable, returns to original state.
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Ground substance
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Contains glycosaminoglycans, proteoglycans, and glycoproteins.
Cells
Fixed cells: Fibroblasts, adipocytes, mast cells.
Transient cells: Macrophages, lymphocytes, plasma cells.
Definition
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Composed of extracellular fibers, ground substance, and cells.
Functions
Structural framework, nutrient exchange, immune defense, energy storage.
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Cartilage
Components
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Fibers: Type II collagen, elastic fibers.
Ground substance: Proteoglycans, hyaluronic acid.
Definition
Avascular, elastic connective tissue.
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Provides support, shock absorption, smooth joint surfaces.
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Types of Cartilage
Hyaline Cartilage
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Found in nose, trachea, joints, fetal skeleton.
Provides smooth surfaces, precursor to bone.
Elastic Cartilage
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Found in external ear, epiglottis.
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Fibrocartilage
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Found in intervertebral discs, pubic symphysis.
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Bone Tissue
Components
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Matrix
Organic: Collagen, glycoproteins.
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Types of Bone
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Spongy Bone
Porous, lightweight structure.
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