| Veterinary
Histology UFF Department of Morphology - Biomedic Institute LaBEc - Laboratory of Cellular and Extracellular Biomorphology |
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Veterinary
Histology Atlas |
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Versão em Português
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Cartilaginous
Tissue |
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General Characteristics •
Firm and flexible matrix, resistant to mechanical tensions(Shock
absorption) |
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Components Undifferentiated Mesenchymal Cells: Differentiate and form the chondroblasts |
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Perichondrium |
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Chondroblasts • Linage of cells that will originate new Chondrocytes • Synthesize the Cartilaginous Matrix • Reproduce through Mitosis |
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Chondrocytes:
Mature cells responsible for the maintenance of the Cartilaginous
Matrix |
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Cartilaginous
Matrix • Formed of: Proteoglycans, Glycoproteins, Hyaluronic Acid and Bundle of thin fibres of Collagen Type II • Molecular interaction between glycosaminoglycans and fibrils of Collagen type II grant its toughness |
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Forms of Growth Appositional: Differentiation of Mesenchymal cells into chondroblasts and then into chondrocytes |
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Interstitial • Through the mitotic division of existing chondrocytes • Occurs only during the cartilage’s first phases |
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Isogenous
Groups: Cells with the same origin whose successive mitosis
form a group of cells |
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Coronary • Compact Formation • Normally 4 cells organized themselves forming a square |
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Axial:
Cells group themselves forming a line |
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Types |
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Hyaline
Cartilage • Composed mainly of Collagen Type II • Offers a relative toughness to the Tissue • Perichondrium is present • Ex: Nose, Larynx, Tracheal Rings, Bronchia, ventral extremities of the ribs, Articulations |
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Elastic
Cartilage • Besides producing the matrix, it produces elastic fibers • Composed of Elastic Fibers and Collagen Type II • Greater Flexibility • Perichondrium is present • Ex: Ear, Eustachian tube, Epiglote, Larynx |
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Fibrous
Cartilage • Thick Clusters of Collagen Type I are present • Scarce Cartilaginous Matrix • Absence of Perichondrium • Associated to a Dense Connective Tissue • Ex: Intervertebral Discs, Articular Discs and can be adhered to the bone |
