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11 Cards in this Set
- Front
- Back
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Cartilage
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Weight bearing connective tissue that is found where both support and flexibility are needed.
Composed of: 1. chondrocytes 2. ground substance 3. connective tissue fibers |
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Chondroblasts
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Synthesize the ground substance and fibers of the cartilage matrix.
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Chondrocytes
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Chondroblasts that are fully surrounded by matrix (mature chondroblast cells).
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Territorial Matrix
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The matrix immediately surrounding the lacunae that is newly formed and is poor in collagen but rich in glycosaminoglycans.
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Perichondrium
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Membrane surrounding the cartilage. Present in hyaline cartilage and elastic cartilage. Absent in fibrocartilage.
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Two layers of Perichondrium
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1. Fibrous layer
-Made up of Type I collage fibers and fibroblasts. -Vascular 2. Chondrogenic layer -Consists of undifferentiated cells |
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Types of Cartilage Growth
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1.Appositional Growth
-Cells of the chondrogenic layer differentiate into chondroblasts that lay down cartilage matrix 2. Interstitial Growth -Chondrocytes within the mmatrix divide and the daughter cells lay down more matrix. -Enlarges from the inside |
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3 Types of Cartilage
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1. Hyaline Cartilage
2. Elastic Cartilage 3. Fibrocartilage |
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Hyaline Cartilage
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Found in the developing skeleton, articular ends of long bones, nose, larynx, trachea, and bronchi, and ventral ends of ribs.
-Type II Collage fibers -Perichondrium present -Chondrocytes form cell nests or isogenous groups |
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Elastic Cartilage
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Found in the external ear, Eustachian tube, and some of the laryngeal cartilages where extra resiliency is needed.
-Type II Collagen fibers + MANY elastic fibers -Perichondrium present |
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Fibrocartilage
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Found at transitions between bone and fibers (e.g. tendon insertions, annulus fibrosis, and pubic symphysis).
-Type I collagen fibers + Type II collagen fibers -Chondrocytes line up in rows (herring bone pattern) -No Perichondrium |
