This is a contiguous series of coronal MRA (magnetic resonance angiography) images of the abdomen in a 15y old girl. The first image is the most posterior; subsequent images progress anteriorly. You can look at the video frame by frame and try to identify the labelled structures. Sometimes a structure is labelled in only one of the sections in which it can be seen; in other cases the same structure may be labelled in a few sections, not necessarily contiguous. The answers will be revealed when you click on the appropriately labelled drop-down arrows below the image.