The ductus arteriosus is right on the aortic arch where vessels are branching off to the brain and upper extremities.

动脉导管就位于主动脉弓上，发出供应上肢及大脑分支的血管位置。

On the left side of the heart, the aortic arch should be the highest up followed by the pulmonary artery.

心脏左侧的最高点应为主动脉弓，下面是肺动脉。

The aortic arch also contains special receptors that detect how much the aorta is stretching.

主动脉弓还包含特殊的受体，可以检测主动脉的伸展程度。

Lastly, G is for great vessels which includes the superior vena cava, inferior vena cava, ascending aorta, aortic arch, pulmonary artery, and descending aorta.

最后，G指大血管" Great vessels" ，包括了上腔静脉、下腔静脉、升主动脉、主动脉弓、肺动脉与降主动脉。

As we continue to move away from the heart, we encounter the next section, called the aortic arch.

当我们继续远离心脏时，我们会遇到下一个部分，即主动脉弓。

This portion of the aorta spans from the aortic arch to the level of the diaphragm.

主动脉的这一部分从主动脉弓到横膈膜的水平面。

This section is called the aortic arch, and it's the curved section of the aorta with branches that supply the brain, head, neck and arms.

这个部分称为主动脉弓，它是主动脉的弯曲部分，分支供应大脑、头部、颈部和手臂。

The thoracic aorta is the part that travels through your thorax and spans from the aortic arch to the level of the diaphragm.

胸主动脉是穿过胸腔，从主动脉弓到横膈膜的部分。

In this lesson, you will learn about the descending aorta, which begins at the aortic arch and is divided into two sections, the thoracic and the abdominal aorta.

本节课，我们将学习降主动脉，它从主动脉弓开始，分为两部分，胸主动脉和腹主动脉。

After exiting the heart, the aorta makes a U-turn at the aortic arch and becomes known as the descending aorta as it plunges down through the thorax and abdomen.

主动脉离开心脏后，在主动脉弓处作一个U形转弯，当穿过胸腔和腹部时，被称为降主动脉。