迷走神经与中枢的联系一直是针灸针麻原理研究所观注的重要课题。一些研究表明迷走神经参与内脏牵扯性痛的传导。迷走神经还对消化、呼吸、循环等系统起着重要的调节作用。虽然以往对迷走神经有过很多研究和报道

但仍存在着一些有争议的问The efferent neurons of the cervical vagal nerve were moved in the ipsil- ateral dorsal motor nuclei of vagas

intermediate zone and ambiguous nuclei and their distribution and size have also been observed.These nuclei may extend into the medullae end and the supra-cervical cord.In pars paraepen- cymalis

pars nuelis intercalatus

retroambiguous nuclei and pars funicularis lateralis

the labelled cell were also found

the distribution of shape of vagal afferent neurons is very similar to that of sympathetic preganglia neurons in the lateral cornner of theraco-lumbalis cord.This distribution of vagal efferent neurons has not been reported before.By HRP transganglia labell

The labe- lled terminals were found in the nucleus of soliterally

with ipsilateral predo- minance.The solitary ipsilateral of the injective side was also labelled and could be traced as C1-C2 Segments.In this study we also observed the sepa- ration of sensory and motor fibers of the vagus nerve roots in the upper part of the medulla.