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Anatomy Bone
Question | Answer |
---|---|
long bones | bones that are longer than they are wide; humerus, femur |
short bones | cube shaped bones; wrists and ankles |
flat bones | broad surface; ribs, craneal |
irregular bones | varied shapes and sizes and surface features; vertebra |
compact bone | dense, hard, forms protective exterior portion of all bones |
spongy bone | inner layer of compact bone & ends of long bones, very porous & less dense than compact bones |
osteoblasts | bone cells that synthesize and secrete unmineralized ground substances; bone forming cells |
osteocytes | mature bone cells |
osteoclasts | large bone cells that break down bone tissue; important for bone growth, healing and remodeling |
greenstick fracture | bone splinters but break is incomplete; common in children |
compound fracture | fracture in which the bone ends penetrate through skin surface |
simple fracture | bone is broken cleanly; ends do not penetrate the skin |
spiral fracture | result of twisting force |
compression fraction | fracture in which the bone is crushed; common in vertebral column |