Term
| cartilege general considerations |
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Definition
| fast forming, light and flexible much intercellular substance, non-vascular nutrients supplied by diffusion through ct matrix |
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Term
| 2 main cells state and breifly describe |
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Definition
| Chondroblast: young progenitor come from mesenchumal cells or multpotential ct cells differentiate to produce cartilage matrix; chondrocyte: mature located within lacunae contain golgi complex RER and frequently fat droplet |
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Term
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Definition
| fibers-depend on type of cartilage, ground substance: predominately chondroitin sulfates which imparts a bluish stain on H&E, more concentrated around the lacunae |
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Term
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Definition
| meaning little lake houses chondrocytes embedded with in cartilege relatively devoid of groundsubstance |
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Term
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Definition
| area of cartilege with exception of the areas occupied by lacunae, is rich in gound substance and fibers |
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Term
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Definition
| fluid filled matrix in the lacunae occupied by chondrocytes |
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Term
| perichondrium state and describe the two layers that make it |
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Definition
| is where new cartilege cells are derived. Composed of a fibrous layer: dense regular CT (parrallel collagen fibers) and chondrogenic layer: bleds gradually into cartilage, where chondrogenesis occurs |
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Term
| 2 types of growth state and breifly describe each |
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Definition
| Appositional: (add) chondroblasts of the CG layer secrete matrix interstitial: chondrocytes divide producing isogenous groups/units |
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Term
| name the three types of cartilage |
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Definition
| Hyalin, elastic, fibrocartilage |
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Term
| Hyaline describe and where distribution |
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Definition
| composed mainly of collagen type 2 fribrils have similar refractive index as groundsubstance, diributed in fetal skeleton, articular cartilage of bone surfaces at joints, nose larynx treachia bronchi |
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Term
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Definition
| also composed of type 2 collagen fiber component of matrix is abundant forms dense branching network almost obscures groundsubstance very little groundsubstanc, chondrocytes are larger then hylin often have fat bodies framwork of hematopoeitic areas spleen bone marrow lymppoids organs distributed in ear epiglottis and parts of larynx |
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Term
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Definition
| never occurs alone but blend with neighboring hyalin cartilage fiborous tissue or bone, bundles of fiber, bundles of collagen fill matrix, chondrocytes may appear in parallel rows or randomly distributed, occur lacunae minimal ground substance , functions: provides stiffnessand great tensile strength at tendon insertions, transitions form between dense FECT and cartilege, shock absorber, distribution: annulus fibrosus which covers the intervertebreal disc gel like mass derived from the notocord, pubic symphasis, and attatchment of some tendens to bones |
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Term
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Definition
| chondrocytes hypertrophy, produve alk phosphatase with provides calcifiable matrix, calcium phosphate deposted in matrix which prevents diffusion of nurtients kill chondrocyte leaving behind matrix |
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