Which part of the aorta emerges from the heart's left ventricle?

The part of the aorta that emerges from the heart's left ventricle is the ascending aorta. This section is the first part of the aorta and is responsible for carrying oxygen-rich blood away from the heart to supply the body. After the left ventricle contracts, blood is pumped into the ascending aorta, where it then continues into the aortic arch before distributing to the rest of the systemic circulation.

In contrast, the descending aorta refers to the portion of the aorta that travels downward after the aortic arch has branched out. The aortic arch itself is the curved section that connects the ascending aorta to the descending aorta, featuring important branches that supply the head, neck, and arms. The coronary arteries arise from the ascending aorta shortly after it leaves the heart and are responsible for supplying blood to the heart muscle itself, but they are not an anatomical part of the aorta's main structure like the ascending aorta is.