Atherosclerosis is a disease affecting the arterial blood vessel and it is commonly referred to as a "hardening" or "furring" of the arteries. It is caused by the formation of multiple plaques within the arteries. Theses plaques begin to form when a vessel receives tiny injuries, usually at a point of branching. In turn these plaques gradually thicken and harden with fibrous material, cells, and other deposits, restricting the lumen (opening) of the vessel and reducing blood flow to the tissues, a condition known as ischemia.
Pathologically, the athermanous plaque is divided into three discrete components:
The atheroma ("lump of porridge", from Athera,) is the nodular accumulation of a soft, flaky, yellowish material at the center of large plaques, composed of macrophages nearest the lumen of the artery, underlying areas of cholesterol crystals, and possibly also calcification at the outer base of older/more advanced lesions. The following terms are comparable, yet diverse,......
Join Now or Login to view the rest of this paper.
Approximate Word Count: 756
Approximate Pages: 3 (260 words per double-spaced page) |