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18 Cards in this Set
- Front
- Back
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Parts of a typical Long Bone
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Epiphyses, Metaphysis, Diaphysis
Articular Cartilage, Periosteum, Medullary Cavity, Endosteum |
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Four types of cells of bone and their functions
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Osteogenic Cells - Unspecialized cells from mesenchyme
Osteoblasts - Bone building cells Osteoclasts - Bone Absorbing Cells Osteocytes - Mature bone cells used to maintain bone tissue |
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Spongy Bone (haves and not haves) Makes up most of ____ Bones
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-Does not have Osteons
-Contains trabeculae surround red bone marrow - short flat irregular bones |
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Periosteum is rich in?
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Sensory Neurons
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Intramembranous Ossification
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- bone formation directly within mesenchyme
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Endochondral Ossification
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- Bone formation within hyaline cartilage
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Zones of Epiphyseal Plate and functions
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Resting - Nearest the epiphysis
Proliferating-dividing coin stacks Hypertrophic-maturing chondrocytes Calcified-part that gets eaten by osteoclasts and rebuilt longer |
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Appositional Growth of Bone
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Osteoblasts in periosteum builds thickness of bone
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Effect of Sex hormones on Bone
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Slow resorbtion and promotes new bone deposition
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Factors supporting bone growth and maintenence
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Minerals - Calcium and P
Vitamins - C, K, B12 Hormones - IGH, HGH, TH Estrogen, Androgen |
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When Blood Calcium is too HIGH
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Calcitonin pushes osteoblasts to reabsorb
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When Blood Calcium is too LOW
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PTH pushes osteoclasts to eat at bone and release calcium
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Perforating Fibers
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Attaches Periosteum to Bone
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Comminuted Fracture
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Shattered pieces
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Greenstick Fracture
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Half of bone broken. Other half Bent
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Impacted Fracture
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One side of bone is jammed into other
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Pott's Fracture
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Fibula broken, damaging Tibia
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Colles Fracture
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Radius broken and sliding off
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