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26 Cards in this Set
- Front
- Back
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What are the 3 types of cartilage?
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1) Hyaline
2) Elastic 3) Fibrocartilage |
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What is the embryonic origin of cartilage?
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mesenchyme
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The target destination for cartilage to be laid down?
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protochondral tissue
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The 2 means of cartilage growth are ?
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1) interstitial
2) appositional |
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The matrix of cartilage is secreted by _____ and consists primarily of _______
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chondroblasts
hyaluronic acid |
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What are the constituents of hyaluronic acid?
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glucoronic acid & galactosamine
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an important proteoglycan in the matrix of cartilage consisting of glucoronic acid / glactosamine/ and sulfate
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Chondroitin Sulfate
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what is the type of collagen found within cartilage?
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Type II collagen
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cell nest or _______ are a cluster of about 8 choncrocytes in one _____
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isogenous cells
lacuna |
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the perichondrium develops arround the cartilage and forms 2 layers made of what?
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1) Fibrous layer = fibroblasts = collagen
2) Inner Chondrogenic layer = presence of chondroblasts or -cytes |
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when is cartilage converted to bone?
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never. it is replaced
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the matrix surrounding the lacunae is called ?
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territorial matrix
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cartilage of the ear, nose, and larynx
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elastic
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the appearance of elastic cartilage is what color
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yellowish
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cartilage found in intervertebral discs, pubic symphysis, some bony sockets inserstions
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fibrocartilage
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is cartilage vascularized
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nein
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What is the fraction breakdown of the organic and inorganic components of bone?
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2/3 inorganic = hydroxyapatite
1/3 organic = collagen I and other proteins |
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All bones have marrow cavity, use _____ growth process, and have a periosteum and an endosteum
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appositional growth
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the inner ______ layer of bone is synonymous with the inner chondrogenous layer of cartilage, which contains _______
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cambium
osteoblasts progenitor cells |
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flat bones of skull and clavicle form from what type of bone growth?
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intramembranous
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mesenchyme differentiating in to fibroblasts to lay down collagen I for ossification is called
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intramembranous bone growth
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the site of bone complexes being formed?
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center of ossification
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osteocytes send out syncitial processed for nutrition through what?
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canaliculi
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are osteoblasts acidophilic or basophilic and why?
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basophilic due to protein production
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when the haversian canals take a 90 degree angle turn, these tunnels are called?
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Volkmann's canals
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multiple osteoclasts fuse to form ____ _____ ____
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foreign multinucleated cells
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