Why does the circulatory system include the kidneys? Why does the brachial not split into ulnar/radial? Where are the hypogastrics or profunda? Why does the aorta go directly into the brain? Why do the carotids go out to the shoulders?
The kidneys are pretty important to the circulatory system, I think in this it makes more sense to include them than not. It is a comic book tho so I'm not expecting any scientific accuracy