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23 Cards in this Set
- Front
- Back
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6 Functions of the Bone |
support,protection,movement,mineral storage, hemapoiesis(blood cell formation), & fat storage |
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Hemapoiesis |
Blood cell formation; Adults: occurs in pelvis,cranium, vertebrae,and sternum;Kids: occurs in long bones such as femur and tibia. |
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Epiphysis |
End of bone |
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Epiphysial Plate |
layer of hyaline cartilage; New bone is made in it to lengthen the bone during growth;when growth ends it closes |
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Diaphysis |
Shaft of bone |
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Articular Cartilage |
hyaline cartilage that covers the the epiphysis; Reduces friction |
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Periosteum |
membrane that covers bone except where cartilage is present; two layers:fibrous tough layer of dense irregular connective tissue where tendons and ligaments anchor to the bone: Inner osteogenic layer. |
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Endosteum |
epithelial membrane that lines the bone medullary cavity; one layer of connective tissue, one layer of osteoblasts that make new bone cells and many osteoclasts |
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Medullary Cavity |
Space in the center of the diaphysis that contains yellow marrow |
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Osteon |
functional unit of the bone |
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Concentric Lamellae |
Sheets of osteocytes |
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Lacuna |
Empty Space |
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Canaliculi |
canals that link osteocytes to eachother |
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Haversian Canal |
central passageway through osteon for b.v & nerves. |
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Compact Bone |
Dense bone that encases the bone |
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Trabeculae |
thin struts of bone in a mesh pattern around open spaces. |
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Osteoid |
organic component of bone matrix; consists of Collagen, Glycoproteins and Vitamin C |
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Osteoblast |
Immature bone cells |
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Osteocyte |
Mature Bone cell;obtains nutrients, and removes waste |
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Osteoclast |
huge cells that forms a huge surface area that releases acids/lysosomal enzymes that breakdown osteoid of bone matrix |
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Osteoclast Function |
Resorption; remodel their contour during growth, repair themselves after injury, release minerals from the bony resevoir when they are needed for other body functions |
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Hydroxyapatite |
inorganic material; calcium& phosphorous; some magnesium,fluoride, and sulfur. |
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Osteogenesis |
Ossification/Bone formation |
