[The structural-functional architectonics of the enteral portion of the metasympathetic nervous system in representative lower vertebrates--the teleosts].

The character of neurons and interrelations among them in submucous plexus were found to change along the digestive tract in lower vertebrates. The plexus looks like a network of ganglion-like structures composed of different number of cells. Specific feature of the plexus involves the absence of a regular ganglionic structure which seems to characterise a transitory stage in formation of the submucous plexus in vertebrates.