An aortic sinus is one of the anatomic dilations of the ascending aorta which occurs at the aortic root, i.e., just above the aortic valve. The largest artery in the human body, the aorta originates from the left ventricle of the heart and brings oxygenated blood to all parts of the body in the systemic circulation. ... The aortic valve is one of the valves of the heart. ...
There are generally three aortic sinuses, the left, the right and the posterior. The left aortic sinus gives rise to the left coronary artery, the right aortic sinus gives rise to the right coronary artery. Usually, no vessels arise from the posterior aortic sinus, which is therefore known as the non-coronary sinus. The coronary circulation consists of the blood vessels that supply blood to, and remove blood from, the heart. ... The coronary circulation consists of the blood vessels that supply blood to, and remove blood from, the heart. ...
Each aortic sinus can also be referred to as the sinus of Valsalva, the sinus of Morgagni, or Petit's sinus.
The aortic annulus, the aortic cusps, the aortic sinuses, and the sinotubular junction are the components of the aortic root and they function as a unit.
The aortic annulus is a fibrous structure that attaches the aortic root to the left ventricle.
Histological examination of the aortic annulus reveals that the aortic root has a fibrous continuity with the anterior leaflet of the mitral valve and membranous septum, and it is attached to muscular septum through fibrous strands.
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