Which of the following statements about bone remodeling and repair is correct?
A)Bone remodeling involves removal of old bone by osteoblasts.
B)The rate of bone remodeling increases in the elderly.
C)Exposure of a bone to increased mechanical stress can lead to bone remodeling.
D)Bone remodeling does not involve the activity of the osteoclasts and the osteoblasts.
E)As a long bone increases in diameter,the size of the marrow cavity decreases.

Question

Quizplus · Accepted Answer

Exposure of a bone to increased mechanical stress can lead to bone remodeling. This is because bone remodeling is a response to changes in mechanical stress placed on the bone. When the bone experiences increased mechanical stress, osteoblasts and osteoclasts are stimulated to remodel the bone, increasing its strength and density. This is why exercise is important for maintaining strong bones. Choice A is incorrect because osteoclasts are responsible for removing old bone, not osteoblasts. Choice B is incorrect because the rate of bone remodeling actually decreases in the elderly. Choice D is incorrect because bone remodeling involves both osteoclasts and osteoblasts. Choice E is incorrect because as a long bone increases in diameter, the size of the marrow cavity also increases.

Which of the Following Statements About Bone Remodeling and Repair