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Definition
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Term
| What is endochondrial Ossification? |
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Definition
| During fetal development when most of the skeleton first develops as a cartilage pattern or model, and then the cartilage of this model is gradually replaced by bone. |
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Definition
| A cell that produces cartilage |
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Definition
| Found within the physis, which continues to proliferate and produce cartilage to provide this separation and thus allow for continued growth in the length of the long bone. |
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Definition
| A multinucleated cell involved in the reabsorption of cartilage. Cartilage destroying cells. |
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Definition
| It is bone producing cells of the periosteum which are responsible for increases in the diameter of bones, and activity of periosteal cells is important in the healing of fractures. |
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Definition
| Osteoclasts are bone destroying cells. These cells, derived from macrophages, take an active part in bone destruction by releasing organic acids and enzymes. |
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Definition
| Osteoblasts that have completed their bone-forming function and have become trapped in new bone tissue, evolving into structural bone cells. Mature bone cells |
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Term
| What is the perichondrium |
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Definition
| A fibrous layer containing more numerous chondrocytes and less matrix. The perichondrium provides the blood supply to the underlying cartilage, which does not contain blood vessels. |
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Definition
| A fibrous membrane that covers the surface of a bone except where articular cartilage is. |
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Definition
A fibrous membrane that lines the marrow cavity and osteonal canals of a bone.
*Erosion of existing bone by osteoclasts in the endosteum determines the size of marrow cavity and the thickness of the diaphyseal cortex. |
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Term
| What is the Haversian System? |
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Definition
| The entire structure of osteoblast makeup of bone |
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Term
| What are Haversian canals? |
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Definition
| The central canal containing blood vessels |
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Term
| What are Volkmann's canals? |
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Definition
| Where blood vessels extend form the periosteum to central canals through the volkman's canal which often travel at right angles to the central canals. When blood vessels run sideways |
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Definition
| A system of tiny canals that connect the lucanae with in the substance of the bone. The canaliculi transmit tissue fluid that is essential for maintaining the life of the osteocytes. |
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Definition
| Small cavities of bone where osteocytes are found |
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Definition
| A protanaceeous matrix that osteoblasts lay down that mineralize to form new bone. |
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Term
| What is a primary ossification center? |
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Definition
| The center of ossification that develops in the midshaft of a long bone |
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Term
| What is a secondary ossification center? |
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Definition
| Develops near the ends of long bones. It is able to grow and expand. |
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Term
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Definition
| A region of cartilage that separates the primary and secondary ossification centers during growth and development. Also known as the growth plate |
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Definition
| Each end of a long bone that contains a secondary ossification center |
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Definition
| The midshaft region of a long bone that contains the primary ossification center |
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Term
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Definition
| The region on a long bone where the diaphysis and an epiphysis meet. |
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Term
| What is articular cartilage? |
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Definition
| A layer of hayline cartilage covering the articular surface |
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Term
| What is a synovial membrane? |
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Definition
| The deeper layer of the joint capsule which as a delicate layer of connective tissue extending from the edges of the articular cartilage's of the adjacent bones but not covering the articular cartilage. This membrane secrets synovial fluid, may have plicae synovials and villi synovials. |
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Term
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Definition
| Gives bone great strength. Made up of many columns together. |
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