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18 Cards in this Set

  • Front
  • Back
Parts of a typical Long Bone
Epiphyses, Metaphysis, Diaphysis

Articular Cartilage, Periosteum, Medullary Cavity, Endosteum
Four types of cells of bone and their functions
Osteogenic Cells - Unspecialized cells from mesenchyme

Osteoblasts - Bone building cells

Osteoclasts - Bone Absorbing Cells

Osteocytes - Mature bone cells used to maintain bone tissue
Spongy Bone (haves and not haves) Makes up most of ____ Bones
-Does not have Osteons
-Contains trabeculae surround red bone marrow

- short flat irregular bones
Periosteum is rich in?
Sensory Neurons
Intramembranous Ossification
- bone formation directly within mesenchyme
Endochondral Ossification
- Bone formation within hyaline cartilage
Zones of Epiphyseal Plate and functions
Resting - Nearest the epiphysis
Proliferating-dividing coin stacks
Hypertrophic-maturing chondrocytes
Calcified-part that gets eaten by osteoclasts and rebuilt longer
Appositional Growth of Bone
Osteoblasts in periosteum builds thickness of bone
Effect of Sex hormones on Bone
Slow resorbtion and promotes new bone deposition
Factors supporting bone growth and maintenence
Minerals - Calcium and P
Vitamins - C, K, B12
Hormones - IGH, HGH, TH
Estrogen, Androgen
When Blood Calcium is too HIGH
Calcitonin pushes osteoblasts to reabsorb
When Blood Calcium is too LOW
PTH pushes osteoclasts to eat at bone and release calcium
Perforating Fibers
Attaches Periosteum to Bone
Comminuted Fracture
Shattered pieces
Greenstick Fracture
Half of bone broken. Other half Bent
Impacted Fracture
One side of bone is jammed into other
Pott's Fracture
Fibula broken, damaging Tibia
Colles Fracture
Radius broken and sliding off