When osteoblast lay new bone from outside to inside in a osteon, the active formation area is called________________?
Correct answer: B. Filling cone
- A. Haversion cone
- B. Filling cone
- C. Cutting cone
- D. Howships cone
Explanation
During osteon remodeling, osteoclasts create the cutting cone and osteoblasts follow behind to deposit new lamellae in the filling cone. Thus, the active bone-forming region is the filling cone.
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