What are the major bone surfaces, Biology

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Bone Surfaces: There are four major bone surfaces:

1) Periosteal (outer surface of all bones)

2) Endosteal (inner surface of cortical bone)

3) Haversian (inner surface of haversian canals within osteons)

4) Trabecular (outer surface of all individual trabeculae)

All activity that changes bone by direct operation on bone tissue occurs on one of these four surfaces. These four surfaces can be seen in the figure below:

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