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Medullary cavity

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The medullary cavity is the central cavity of bone shafts where yellow marrow (adipose tissue) is stored. Located in the main shaft of the bone (diaphysis), the medullary cavity has walls composed of compact bone and is lined with a thin, vascular membrane (endosteum).

In an infant this area is involved in the formation of red blood cells, so red marrow is present.

See also

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