Information about Perichondrium
The perichondrium is a layer of dense irregular connective tissue which surrounds the cartilage of developing bone. It consists of two separate layers: an outer fibrous layer and inner chondrogenic layer. The fibrous layer contains fibroblasts, which produce collagenous fibers. The chondrogenic layer remains undifferentiated and can form chondroblasts or chondrocytes.
Perichondrium is a type of Irregular Collagenous Ordinary Connective Tissue, and also functions in the growth and repair of cartilage.
Perichondrium is a type of Irregular Collagenous Ordinary Connective Tissue, and also functions in the growth and repair of cartilage.
External links
- - "Slide 12, Developing Bone (H&E). Examine cartilage (right) and its perichondrium (arrows)."
- UIUC Histology Subject 330
Bone and cartilage | |
|---|---|
| Cartilage | chondroblast, chondrocyte, perichondrium, types (hyaline, elastic, fibrous), fibrocartilage callus, metaphysis |
| Bone | ossification (intramembranous, endochondral, epiphyseal plate), cycle (osteoblast, osteoid, osteocyte, osteoclast), types (cancellous, cortical), regions (epiphysis, diaphysis), structure (osteon/Haversian system, Haversian canals, endosteum, periosteum, Sharpey's fibres, enthesis, lacunae, canaliculi, trabeculae, medullary cavity, bone marrow), shapes (long, short, flat, irregular, sesamoid) |
Connective tissue is one of the four types of tissue in traditional classifications (the others being epithelial, muscle, and nervous tissue.) It is largely a category of exclusion rather than one with a precise definition, but all or most tissues in this category are similarly:
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Cartilage is a type of dense connective tissue. It is composed of collagen fibers and/or elastin fibers, and can supply smooth surfaces for the movement of articulating bones.
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A fibroblast is a type of cell that synthesizes and maintains the extracellular matrix of many animal tissues. Fibroblasts provide a structural framework (stroma) for many tissues, and play a critical role in wound healing.
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A fibroblast is a type of cell that synthesizes and maintains the extracellular matrix of many animal tissues. Fibroblasts provide a structural framework (stroma) for many tissues, and play a critical role in wound healing.
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Collagen is the main protein of connective tissue in animals and the most abundant protein in mammals, [1] making up about 25% of the total protein content.
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Uses
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A chondroblast is a cell which originates from a mesenchymal stem cell and forms chondrocytes, commonly known as cartilage cells.
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External links
- chondroblast at eMedicine Dictionary
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Chondrocytes (from Greek chondros cartilage + kytos cell) are the only cells found in cartilage. They produce and maintain the cartilaginous matrix, which consists mainly of collagen and proteoglycans.
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The College of Medicine at Urbana-Champaign is a graduate school at the University of Illinois at Urbana-Champaign.The UIC College of Medicine at Urbana-Champaign is located at the original campus of the University (with 42,000 students, undergraduate and graduate) and offers a
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Bones are rigid organs that form part of the endoskeleton of vertebrates. They function to move, support, and protect the various organs of the body, produce red and white blood cells and store minerals.
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Cartilage is a type of dense connective tissue. It is composed of collagen fibers and/or elastin fibers, and can supply smooth surfaces for the movement of articulating bones.
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Cartilage is a type of dense connective tissue. It is composed of collagen fibers and/or elastin fibers, and can supply smooth surfaces for the movement of articulating bones.
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A chondroblast is a cell which originates from a mesenchymal stem cell and forms chondrocytes, commonly known as cartilage cells.
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External links
- chondroblast at eMedicine Dictionary
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Chondrocytes (from Greek chondros cartilage + kytos cell) are the only cells found in cartilage. They produce and maintain the cartilaginous matrix, which consists mainly of collagen and proteoglycans.
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Hyaline cartilage consists of a slimy mass of a firm consistency, but of considerable elasticity and pearly bluish color. It contains no nerves or blood vessels, and its structure is relatively simple.
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Elastic cartilage is a type of cartilage present in the outer ear, larynx, and epiglottis which contains fibers made of elastin.
Elastic cartilage, histologically is similar to hyaline cartilage but contains a plethora of elastic fibers.
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Elastic cartilage, histologically is similar to hyaline cartilage but contains a plethora of elastic fibers.
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White fibrocartilage consists of a mixture of white fibrous tissue and cartilaginous tissue in various proportions; to the former of these constituents it owes its flexibility and toughness, and to the latter its elasticity.
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A fibrocartilage callus is a temporary formation of fibroblasts and chondroblasts which forms at the area of a bone fracture as the bone attempts to heal itself. The cells eventually dissipate and become dormant, laying in the resulting extracellular matrix that is the new bone.
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The metaphysis is the portion of a long bone between the epiphyses and the diaphysis. The "growth plate", or "physis", or "epiphyseal plate", although it precedes the development of the ossified metaphysis, may also be referred to as the metaphysis.
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Bones are rigid organs that form part of the endoskeleton of vertebrates. They function to move, support, and protect the various organs of the body, produce red and white blood cells and store minerals.
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Ossification is the process of bone formation, in which connective tissues, such as cartilage are turned to bone or bone-like tissue. The ossified tissue is invaginated with blood vessels. These blood vessels bring minerals like calcium and deposit it in the ossifying tissue.
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Intramembranous ossification is one of two types of bone formation and is the process responsible for the development of flat bones, especially those found in the skull and clavicles. Unlike endochondral ossification, cartilage is not involved or present in this process.
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Endochondral ossification is one of two types of bone formation (ossification) and is the process responsible for much of the bone growth in vertebrate skeletons, especially in long bones.
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The epiphyseal plate (or epiphysial plate, or growth plate) is the cartilage plate in the long bones of children and adolescents. The longitudinal growth of these bones occurs primarily at these plates.
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An osteoblast (from the Greek words for "bone" and "germ" or embryonic) is a mononucleate cell that is responsible for bone formation. Osteoblasts produce osteoid, which is composed mainly of Type I collagen.
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Osteoid is a protein mixture which is secreted by osteoblasts. When it mineralizes, it becomes bone. Osteoid is primarily composed of Type I collagen.
When there is insufficient mineral or osteoblast dysfunction, the osteoid does not mineralize properly, and it accumulates.
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When there is insufficient mineral or osteoblast dysfunction, the osteoid does not mineralize properly, and it accumulates.
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An osteocyte, a star-shaped cell, is the most abundant cell found in bone. Cells contain a nucleus and a thin ring of cytoplasm. Once osteoblasts become trapped in the matrix they secrete, they become osteocytes.
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An osteoclast (from the Greek words for "bone" and "broken") is a type of bone cell that removes bone tissue by removing the bone's mineralized matrix. This process is known as bone resorption.
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Cancellous bone (also known as trabecular, or spongy) is a type of osseous tissue with a low density and strength but very high surface area, that fills the inner cavity of long bones.
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Cortical bone, also known as compact bone is one of two main types of osseous tissues. Cortical bone is dense and forms the surface of bones, contributing 80% of the weight of a human skeleton. It is extremely hard, formed of multiple stacked layers with few gaps.
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Epiphysis is the name for a rounded end of a long bone. The epiphysis is filled with red marrow, which produces erythrocytes, or red blood cells. Located in the epiphysis is the epiphysial plate, also known as the growth plate.
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The diaphysis is the main or mid section (shaft) of a long bone. It is usually filled with Yellow Cartilage, which is made mostly of adipose (fat). This provides some protection to shaft when presure is applied.
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