Bone Growth · Histology

In the process of bone remodeling during growth, why must bone resorption occur on the internal surface of the diaphysis?

  1. To enlarge the marrow cavity and reduce bone weight.
  2. To provide calcium for the epiphyseal plate.
  3. To allow the bone to bend more easily.
  4. To trigger the formation of the secondary ossification center.
Show answer and explanation

Correct answer: To enlarge the marrow cavity and reduce bone weight.

As appositional growth adds bone to the outside, osteoclasts in the endosteum remove bone from the inside. This balanced process ensures the bone grows in diameter while maintaining a proportional marrow cavity and manageable weight.

Difficulty: Medium Question 10 of 20

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