内脏的感觉由植物性神经传入

其传入神经元的胞体位于脑、脊神经节中。这早在1914年Chase和Ranson等已有研究

并被神经解剖学者所公认。70年代初

Kri-Ten adult rabbits were used in this experiment. A solution of 10—20% HRP (sigma Ⅸ

RZ= 3.2) was injected into the "Zusanli" point and the subserosa of the caecum. The uptake and retrograds transmission of HRP in the afferent neurons of both the somatic and visceral nerves were traced to the spinal ganglia. The results showed that: 1. Labelled afferent neurons from the region of "Zusanli" point were found in the spinal ganglia T_(12)—S_2 with a higher concentrauion in L_4—S_2. 2. Labelled afferent neurons from the region of the caecum were found in the spinal ganglia T_2—S_2 with a higher concentration in T_(12)—L_2. 3. The ranges of distribution of labelled afferent neurons from the regions overlaped in the segments T_(12)—S_2.