/sci/ - Science & Math

>>8425966
Its because as a fetus all your arteries were symmetrical but due to heart folding and degeneration of redundant arch arteries it travels with the aortic arch as it remodels. Aortic arch is from the 6th pharyngeal arch and recurrent laryngeal is the nerve to that arch which is why it was there in the first place. So basically as a fetus u need a nerve to this arch, which the recurrent laryngeal nerve is on both sides. But then left side remodeled and it gets pulled down a little farther

Here is an embryology textbook page on the matter