Central cavity of long bone and spongy bone through which medullary canals allow blood vessels to pass. In adults, the cavity is filled with fat.
Medullary cavity
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The medullary cavity (medulla, innermost part) is the central cavity of bone shafts where red bone marrow and/or yellow bone marrow (adipose tissue) is stored (which is why medullary cavity is also known as marrow cavity). Located in the main shaft (cortical bone) of a long bone (diaphysis) (consisting mostly of compact bone), the medullary cavity has walls composed of spongy bone(cancellous bone) and is lined with a thin, vascular membrane (endosteum). However, the medullary cavity is the area inside any bone (long, flat, etc.) that holds the bone marrow.[1] The clavicle is the only long bone that does not contain a medullary cavity.
This area is involved in the formation of red blood cells and white blood cells.
See also
References
- ^ Martini F., & Nath J. L. (2009). Fundamentals of Anatomy and Physiology 8e. San Francisco, CA: Pearson Education Inc.
External links
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 | endosteoma |
| hematosteon |
| marrow cavity |
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 | Sports Science and Medicine. The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved. Read more |
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| Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Read more |
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| Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Medullary cavity". Read more |
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