How does physical exercise affect bone?
A) It stimulates the activity of osteoclasts and therefore accelerates bone resorption.
B) It causes bone density to increase because bone adapts to withstand physical stress.
C) It accelerates the release of calcium into the blood, which boosts serum calcium levels.
D) It has no effect on bone.

Question

Quizplus · Accepted Answer

Physical exercise causes mechanical stress on bone tissues, which triggers osteoblasts to deposit new bone tissue, resulting in an increase in bone density. This process is known as bone remodeling. Therefore, physical exercise has a positive effect on bone by increasing bone density.

How Does Physical Exercise Affect Bone