Innervation of blood vessels in the kidneys of the white lab rat

In the adventitia, there are mainly thick and medium-sized pulp fibers, the diameter of the thick nerve fibers is 0.3±0.2 mm. From the adventitia, nerve fibers penetrate into the muscle membrane, where the nerves have a large length, their diameter is 0.1±0.2 mm. There are quite a lot of soft nerve fibers lying in adventitia, in intima and media, with the presence of nuclei. The diameter of the thin nerve fibers is - 0.03±0.2 mm.