The aortic arches are formed in such a manner that each arch connects the aortic sac to the dorsal aorta. The first arch artery forms the maxillary artery. The second arch artery forms the stapedial artery for some part of fetal life after which it contributes to a part of external carotid artery. The arteries that remain are shown in red while the ones that disappear are shown in white.
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