Renal branches of posterior vagal trunk

Renal branches of the vagus nerve–when present–contain pre-ganglionic parasympathetic motor neurons, which arise from the dorsal motor nucleus of vagus in the medulla oblongata (brainstem).

The vagus nerve gives off numerous branches as it descends in the abdomen. The anterior and posterior vagal trunks spread diffusely in the abdomen and contribute fibers to various neuronal plexuses. In some instances, renal branches arising from the vagus nerve and containing parasympathetic general visceral efferent neurons, could get distributed to the renal plexus. However, please note that the efferent innervation to the kidneys is mainly sympathetic (via least splanchnic nerves and renal plexus). There is little evidence in the literature regarding parasympathetic innervation to the kidneys.