cartilage,bone connective tissue ch 6
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Created by:
jpalmer0113 on June 13, 2011
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39 terms
Terms | Definitions |
|---|---|
 cartilage | found thru out the entire body, semi rigid and not a strong as bone, flexiable and reilient is also avascular |
| chondroblast | begin to product extracellular matrix |
| chondrocytes | cells that continue to produce matrix and become surrounded by the matrix once produced; also known as cartilage cells |
| lucunae | small spaces that chondrocytes occupy within the matrix |
| functions of cartilage | support of soft tissue articulation precursor model for bone growth |
| bone and cartilage | are connective tissue |
| osteocytes | bone cells (mature) |
| perichondruium | sheet of fibrous connective tissue on some cartilage; it's dense irregular and contains some blood vessels to supply the cartilage |
| hyaline cartilage | grisly elastic, pearly blue in color, appears glassy; matrix is homogenous (similar and alike) chrondrocytes are large and scattered randomly, fibers are tiny and not seen with a microscope....exp nose, fetal skeleton |
| fibrocartilage cartilage | large number of collagenous fibers, flexiable and tough, can with stand tenstion and compression, the matrix is scanty and fibers are compact bundles of collagen...chondrocytes are in rows between fibers ; also acts as a shock absorber...exp knee joint, intervetebral disc |
| elastic cartilage | abundant fibers within the matrix, provides support and flexibility the matrix is opaque; chondrocytes are large and randomly scattered, fibers are yellow and closely surrounded by chondrocytes. some may be highly branched for extra flexibility...exp out ear, portion of larynx |
| intersitial growth | growth from within the cartilage itself |
| appositional growth | growth along the cartilage's outside edge or periphery....2 chondrocytes, 2 lucunae and extracellular matrix |
| hemopoiesis | process by which blood cells are formed |
| long bones | longer than they are wide; functions as levers...exp humerus, femur, ulna etc. |
| short bones | tend to be cubed shaped; similar in length and width...includes carpals in the wrist and tarsals in the ankle...transfer force of movement |
| flat bones | broad surface for muscle attachment or protection of organs...exp cranium, ribs and shoulder girdle |
| irregular bones | varied shapes and sizes, includes that of vertebrae and some bones of the skull exp....ethmoid or sphenoid bones |
| sesamoid bone | unusual because they are formed in a tendon in response to joint stress..exp patella |
| wormian bones | bone positioned within a surture of certain crainial bones.... |
| compact bone | hard and dense; protective exterior of all bones |
| spongy bone | deep and very porous in appearence (spongelike) |
| diploe | sandwhiched between compact bone |
| diaphysis | shaft of a long bone |
| epiphysis | end of a long bone (where spongy bone is ) |
| red bone marrow | found in spongy bone;responsible for formation of wbc, plateletts, phatgocytosis of worn out rbc's. |
| articular cartilage | caps each epiphysis and is made up of hyaline cartilage; reduces friction between articulating bones |
| metaphysis | region in bone between diaphysis and epiphysis containing the epiphysial plate (the growth plate) |
| medullary marrow cavity | hollow cylindrical space within the diaphysis containing yellow bone marrow. |
| endosteum | covers most of the internal surface of the bone |
| periosteum | tough, irregular dense connective tissue that covers the external surface of the bone and anchors itself, blood vessels and nerves to the bone. |
| osteogenic cells | give rise to bone forming and bone destroying cells following trauma to bones |
| osteoblasts | bone forming cells |
| osteoclasts | large multinuclear enzymatically that break down bone tissue with hydrocholoric acid |
| osteon | basic functioning unit of bone tissue |
| canaliculi | small channels connected adjacent to lucunae and allow for communication for metabolic interatctions between osteocytes... |
| perforating canals | run // contain blood vessels and nerves |
| circumferential lamelle | rings of bone internal to the endosteum |
| intersitial lamellae | partial lamellae that are leftover portions of osteon that is undergoing reconstruction. |
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