![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdxYSQ8xz7Rtvoha6JvarJyYsywIEWe_3IOs0W65z0kywRWaOUH7qZ8RbByIwviXh4fA06yXQ2vyuoqR1VdXB-sHE6RfpCWTmpW5BmxRS7bFTFabWZ53TEV-TpGmmLeFJ6AQG4xEiFS3U/s400/Gray505.png)
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The ascending aorta is a portion of the aorta commencing at the upper part of the base of the left ventricle, on a level with the lower border of the third costal cartilage behind the left half of the sternum; it passes obliquely upward, forward, and to the right, in the direction of the heart’s axis, as high as the upper border of the second right costal cartilage, describing a slight curve in its course, and being situated, about 6 cm behind the posterior surface of the sternum. The total length is about 5 cm in length.
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