The pressure generated by contraction of the left ventricle pushes blood into the tear, and depending on a variety of factors (size and location of the tear etc.), the blood may push apart the intimal and medial layers. However, in circumstances where there is disease of the intima, or with trauma, a tear may occur. Aortic Anatomy Animation (click image to view) Please refer to the “aortic anatomy” animation following. Under normal circumstances, blood is ejected from the left ventricle of the heart into the aorta, and as it flows through the vessel, it comes into contact only with the inner layer, or intima, of the aortic wall. These 3 layers are present in every artery in the human body, but vary in thickness depending on the size of the vessel. The aortic wall is divided into 3 layers: an inner layer, known as the “intima”, a middle layer known as the “media”, and an outer layer known as the “adventitia”. The easiest way to understand aortic dissection is to gain an understanding of the structure of the aortic wall. As a result, any significant disturbance in blood flow through the aorta can have catastrophic consequences for the affected individual What Is Aortic Dissection? Attached to the left ventricle, it represents the sole means of conveying blood to every organ and tissue in the body, including the heart (via the coronary arteries).
The aorta is the largest artery in the human body. What do Lucille Ball, John Ritter and Jonathan Larson (author of Rent) all have in common? Well, yes, they were all involved in the entertainment industry, but they also all have the dubious distinction of having died of complications due to aortic dissection.
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