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TextD<br><br>The aorta is the main vessel of the systemic arteries or the arteries of the general system. It begins at the upper part of the left ventricle, goes up, arches over the root (корень) of the left lung to the left side of the trunk at the level of the fourth thoracic vertebra. On its way from the fifth thoracic vertebra to about the level of the last thoracic vertebra it is called the thoracic aorta.Then it goes down through the diaphragm. From the point of the last thoracic vertebra to the level of the fourth lumbar vertebra it is called the abdominal aorta.<br><br>It then goes to the border of the fourth lumbar vertebra until here it finishes dividing into the left and right iliac arteries.
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