Bone marrow can be found in almost any bone that holds cancellous tissue.

The structure in all is similar: cancellous tissue enclosed in a layer of compact bone.

In bone, the spongy tissue is called cancellous tissue.

They consist of cancellous tissue enclosed within a thin layer of compact bone.

The head, processes, and the thickened parts of the bone, contain cancellous tissue; the rest consists of a thin layer of compact tissue.

The intervening cancellous tissue is called the diploë, and this, in certain regions of the skull, becomes absorbed so as to leave spaces filled with liquid between the two tables.

The occipital, like the other cranial has outer and inner tables, between which is the cancellous tissue or diploë; the bone is especially thick at the ridges, protuberances, condyles, and anterior part of the basilar part; in the inferior fossæ it is thin, semitransparent, and destitute of diploë.