Abstract
The afferent innervation of the splanchnic nerve has been studied by recording the impulse discharges from the splanchnic, mesenteric and several other nerves. The results are summarized as follows:
1. As the splanchnic afferent nerve fiber has many branchings on its course, it can innervate many different abdominal viscera and several parts of these organs in common.
2. Many of these branchings may be localized near the bifurcation of the nerve trunk.
3. Every myelinated afferent fiber branched at the node of Ranvier, and daughterfibers generally had smaller diameters than those of parent-fibers.
4. Afferent impulses from peripheral mechanoreceptors were conducted not only in a central direction but also to a peripheral direction through branchings.
5. Each abdominal organ is innervated by several different splanchnic afferent fibers in an overlapped manner.
