[Interrelationship between intramural neurons of the stomach and surrounding structures]

There is no firm glial isolation at the border of the intramural ganglion. All elements of the intramural ganglion, situating on its border, among them neurons and dendrites, have contacts with the interstitium and are separated from the latter by a common basal membrane. The insterstitium together with its collagenous fibers can protrude into the ganglionic neuropil. There is no difference in the ultrastructure of superficial and deep ganglionic components. Intercellular canals of the neuropil form a single transporting system with the periganglionic space. Free synaptic terminals of the vegetative neural fibres open into the periganglionic fissure and into the intercellular canals of the neuropil; that conditions an increased contact of neurotransmitters in the tissue fluid, washing neurons of the ganglion, and a constant extrasynaptic trophic and/or modulating effect on the ganglionic neural cells.