Medullary cavity
| Medullary Cavity | |
|---|---|
 A long bone, with medullary cavity labeled near center. | |
| Details | |
| Identifiers | |
| Latin | cavitas medullaris |
| TA98 | A02.0.00.037 |
| TA2 | 386 |
| FMA | 83698 |
| Anatomical terminology | |
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; hence, the medullary cavity is also known as the marrow cavity.
Located in the main shaft of a long bone (diaphysis) (consisting mostly of spongy bone), the medullary cavity has walls composed of compact bone (cancellous bone) and is lined with a thin, vascular membrane (endosteum).[1][2]
Intramedullary is a medical term meaning the inside of a bone. Examples include intramedullary rods used to treat bone fractures in orthopedic surgery and intramedullary tumors occurring in some forms of cancer or benign tumors such as an enchondroma.
Comparative anatomy
[edit]This area is involved in the formation of red blood cells and white blood cells,
In some dinosaurs, reptiles, and birds, a medullary bone grows here, which supplies the calcium supply for eggshells. This has been detected in fossil bones despite the fossilization process.[3] It is not found in crocodiles or reptiles.[4]
References
[edit]- ^ Martini, F.; Nath, J. L. (2009). Fundamentals of Anatomy and Physiology (8th ed.). San Francisco, CA: Pearson Education. ISBN 978-0-321-50589-7.
- ^ Tortora, Gerard J. (2022). Principles of anatomy and physiology. Wiley. ISBN 978-0-7303-9200-2. OCLC 1299321666.
- ^ Peterson, J. E.; Lenczewski, M. E.; Reed, P. S. (October 2010). Stepanova, Anna (ed.). "Influence of Microbial Biofilms on the Preservation of Primary Soft Tissue in Fossil and Extant Archosaurs". PLOS ONE. 5 (10): 13A. Bibcode:2010PLoSO...513334P. doi:10.1371/journal.pone.0013334. PMC 2953520. PMID 20967227.
- ^ Schweitzer, M.H.; Elsey, R.M.; Dacke, C.G.; Horner, J.R.; Lamm, E.-T. (April 2007). "Do egg-laying crocodilian (Alligator mississippiensis) archosaurs form medullary bone?". Bone. 40 (4): 1152–1158. doi:10.1016/j.bone.2006.10.029.
External links
[edit]
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