[Distribution of the LPa3 and PPa3 neuronal processes in the pedal ganglia of the edible snail].

By means of intracellular injection of the dye Lucifer yellow processes were revealed of the snail command neurones of escape behaviour LPa3 and RPa3 in pedal nerves ipsilateral to these neurones. A process of the neurone LPa3 was also found in the contralateral Nervus cutaneus pedalis secundus. Blockade of central chemical synapses by cadmium chloride did not lead to disappearance of motor reactions evoked by electrical stimulation of LPa3 and RPa3 neurones both on ipsi- and contralateral sides of the animal foot; this allowed to suggest a presence in the contralateral muscular pedal nerves of these neurones processes unrevealed by the used dyeing method.