Avascular
Avascular
Avascular (/æˈvæskjʊlər/; from Latin a- "without" and vasculum "small vessel") refers to tissues or organs in the body that lack blood vessels. This term is often used in the context of biology, medicine, and anatomy to describe areas that do not have a direct supply of blood.
Etymology
The term "avascular" is derived from the Latin prefix a- meaning "without" and vasculum meaning "small vessel". It is used to describe tissues or organs that do not have their own blood supply.
Related Terms
- Vascular: Pertaining to the blood vessels or blood circulation.
- Necrosis: The death of cells or tissues from severe injury or disease, especially in a localized area of the body. Causes of necrosis include inadequate blood supply (as in avascular necrosis), bacterial infection, traumatic injury, and radiation injury.
- Avascular necrosis: A condition that occurs when there is loss of blood to the bone. Without blood, the bone tissue dies and the bone collapses. If avascular necrosis involves the bones of a joint, it often leads to destruction of the joint articular surfaces.
- Angiogenesis: The physiological process through which new blood vessels form from pre-existing vessels. This is a normal and vital process in growth and development, as well as in wound healing and in the formation of granulation tissue. However, it is also a fundamental step in the transition of tumors from a benign state to a malignant one.
See Also
External links
- Medical encyclopedia article on Avascular
- Wikipedia's article - Avascular
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