Medullary cavity
| Medullary Cavity | |
|---|---|
| File:Structure of a Long Bone.png A long bone, with medullary cavity labeled near center. | |
| Details | |
| Identifiers | |
| Latin | cavitas medullaris |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terminology [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
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 (cortical 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 | edit source]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
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External links
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