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Atheroma. Atherosclerotic plaque from a carotid endarterectomy specimen. This shows the division of the common into the internal and external carotid arteries. An atheroma, or atheromatous plaque, is an abnormal accumulation of material in the inner layer of an arterial wall. [ 1][ 2] The material consists of mostly macrophage cells, [ 3][ 4 ...
Atherosclerosis. Atherosclerosis[ a] is a pattern of the disease arteriosclerosis, [ 8] characterized by development of abnormalities called lesions in walls of arteries. This is a chronic inflammatory disease involving many different cell types, and driven by elevated levels of cholesterol in the blood. [ 9]
The aorta (/ eɪ ˈ ɔːr t ə / ay-OR-tə; pl.: aortas or aortae) is the main and largest artery in the human body, originating from the left ventricle of the heart, branching upwards immediately after, and extending down to the abdomen, where it splits at the aortic bifurcation into two smaller arteries (the common iliac arteries).
Fatty streak. A fatty streak is the first grossly visible (visible to the naked eye) lesion in the development of atherosclerosis. It appears as an irregular yellow-white discoloration on the luminal surface of an artery. It consists of aggregates of foam cells, which are lipoprotein -loaded macrophages, [ 1] located in the intima, the ...
Acute aortic syndrome ( AAS) describes a range of severe, painful, potentially life-threatening abnormalities of the aorta. [ 1] These include aortic dissection, intramural thrombus, and penetrating atherosclerotic aortic ulcer. [ 2] AAS can be caused by a lesion on the wall of the aorta that involves the tunica media, often in the descending ...
Aorta segments, with thoracic aorta in area marked in green. Aortic rupture is the rupture or breakage of the aorta, the largest artery in the body. Aortic rupture is a rare, extremely dangerous condition. The most common cause is an abdominal aortic aneurysm that has ruptured spontaneously. Aortic rupture is distinct from aortic dissection ...
Arteriosclerosis, literally meaning "hardening of the arteries", is an umbrella term for a vascular disorder characterized by abnormal thickening, hardening, and loss of elasticity [3] of the walls of arteries; [4] this process gradually restricts the blood flow to one's organs and tissues and can lead to severe health risks brought on by atherosclerosis, which is a specific form of ...
The thoracic aorta is a part of the aorta located in the thorax. It is a continuation of the aortic arch. It is located within the posterior mediastinal cavity, but frequently bulges into the left pleural cavity. The descending thoracic aorta begins at the lower border of the fourth thoracic vertebra and ends in front of the lower border of the ...