Skeletal System: Bone Tissue
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37 terms
Terms | Definitions |
|---|---|
 compact bone | tightly packed |
| spongy bone | open spaces |
| flat bones | skull, ribs, sternum |
| diaphysis | shaft of the bone |
| epiphysis | one end of a long bone |
| periosteum | tough membrane covering of bone, but not cartilage |
| red marrow | makes red blood cells |
| yellow marrow | mainly fat |
| osteocytes | mature bone cells; no longer secrete matrix |
| osteoblasts | bone forming cells; can't divide |
| osteoclasts | huge cells from fused monocytes; break bone down |
| ligament | bone to bone attachment |
| tendon | bone to muscle attachment |
| epiphyseal plates | where bone growth occurs |
| metaphysis | areas between the epiphysis and diaphysis that include the epiphyseal plate in growing bones |
| true | true or false: articular cartilage over joint surfaces acts as friction reducer and shock absorber |
| medullary cavity | marrow cavity |
| endosteum | lining of marrow cavity |
| osteogenic layer | bone cells & blood vessels that nourish or help with repairs |
| bones | made up of collagen fibers, ground substance, and cells |
| calcification | salts are deposited in a framework of collagen fibers, which harden |
| paget's disease | some areas of bone are too thick, some areas too thin; may be cause by a slow virus |
| false | true or false: compact bone is completely solid |
| haversian systems | repeating structural units that make up dense bone tissue / also called osteons |
| true | true or false: osteocytes are found in spaces called lacunae |
| canaliculi | small hair-like canals extending from the central canal. Allow for diffusion of nutrients, waste products, hormones, etc. to lacunae. |
| false | true or false: spongy bone contains osteons |
| trabeculae | the irregular latticework of thin bony plates in spongy bone tissue |
| intramembranous ossification | formation of bone directly from or within fibrous connective tissue membranes |
| endochondrial ossification | formation of bone from hyaline cartilage models |
| false | true or false: all embryonic connective tissue begins as mucous tissue |
| resting cartilage | nothing is going on in this zone; anchors rest of epiphyseal plate |
| proliferating cartilage | producing more chondrocytes |
| hypertrophic cartilage | cells enlarge and remain in columns |
| calcified cartilage | thin zone, mostly dead cells due to calcification |
| true | true or false: osteoclasts remove matrix |
| false | true or false: bones continue to grow throughout our life |
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