Central projection of the sensory component of the rat recurrent laryngeal nerve.

The central projection from the sensory components in the rat recurrent laryngeal nerve was studied using WGA-HRP. Sensory terminals were found bilaterally in the nuclei of the tractus solitarius, although they were very sparse contralaterally. In the ipsilateral nucleus, most of these terminals were located in the interstitial subnucleus extending, from the most rostral area, near the obex, caudally for a distance of 1.5 mm.