Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector4882310.17816/kazmj48823Research ArticleTo the scholarship on the chromaffin systemѣ. The structure of the accessory organs of the sympathetic nerve in humansYakhontovaN. M.info@eco-vector.com100619131364635073110202031102020Copyright © 2020, Yakhontova N.M.2020<p>Material. Fruits, babies and adults served as material for my study. There were only 5 fruits in my order for histological examination: one 3 msec., The other 5 msec. and three 6 ms. (8 embryos of a younger age, starting with 9 mm G. L. and up to 50 mm, already properly fixed, are intended by me for the next embryological work). I studied 69 babies, starting from the day of birth and ending with the age of 6 months, and, finally, I examined 16 corpses of a later age, starting at 7 years old (see the next chapter) - on the subject of studying the reverse development of the accessory organs.</p>Kazan Medical archiveКазанский медицинский архив