[Relation between morphologic reactive rearrangement of neuronal elements and their specific surface].

A great vuendorability of thin terminal neural processes as compared to thick fibers or neural cell bodies has been proved. This phenomenon does not depend on whether this very structure is pre- or postsynaptic. It is not connected with distance of the structures from the nucleus-containing area, and is, evidently, stipulated by their geometrical parameters, in particular, by their specific surface (dispersivity). By means of mathematical models it is demonstrated that geometry of the terminal fibrillae contributes to most rapid diffusion through neurolemma and saturation of their neuroplasm with toxic agents. Thus, indissoluble connection between the structure and some functional processes in the neuron at its reactive rearrangement is demonstrated.