[Architectonics of the capillary bed in the zone of myoneural synapses].

Architectonics of the microcirculatory bed of the motor nerve terminals was studied in the white rat skeletal muscles. The vessels were injected with emulsion of Paris blue combined with impregnation method after Bielschowsky--Gross. Motor nerve terminals were stated to have specialized microvessel bed which ensures hemocirculation and transendothelial metabolism in the zone of their localization. In this zone capillaries form open and closed loops. The open loops, as a rule, are of fork-,horseshoe- and S-like forms. Oval, ring-like and rectangular forms are typical for closed microvessel loops. Interrelations described for the microvessels and the motor nerve terminals determine peculiarities of blood supply in the myoneural synapses at the transition of stimulation from the nerve to the muscle and create certain conditions for adaptation of the terminal sections of microcirculatory bed for changes in metabolic requirements of the myoneural synapses.