Diploë

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Diploë
Veins of the diploë as displayed by the removal of the outer table of the skull.
Latin canales diploici
Gray's subject #17 80
Vein diploic veins
Dorlands/Elsevier c_04/12208586

In the cranial bones, the layers of compact tissue are familiarly known as the tables of the skull; the outer one is thick and tough; the inner is thin, dense, and brittle, and hence is termed the vitreous table. 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 air (air-sinuses) between the two tables.

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