avascularis

Avascularis is a term derived from the Latin words "a-" meaning without, and "vasculum" meaning vessel. It refers to the absence of blood vessels in a particular tissue or organ. This condition is often observed in certain types of tissue, such as cartilage, which is primarily composed of extracellular matrix and lacks blood vessels. The absence of blood vessels in avascular tissue is a result of the tissue's low metabolic activity and its ability to obtain nutrients and oxygen through diffusion from surrounding vascularized tissue. Avascularis is a normal physiological feature in many tissues and does not typically cause any health issues. However, in some cases, avascular necrosis can occur, which is a condition where the lack of blood supply leads to tissue death. This can happen due to various reasons, including trauma, infection, or certain medical conditions. Avascular necrosis is a serious condition that can lead to tissue damage and loss of function.