myenteric (nerve) plexus

my·en·ter·ic (nerve) plex·us

[TA] a plexus of unmyelinated fibers and postganglionic autonomic cell bodies lying in the muscular coat of the esophagus, stomach, and intestines; it communicates with the subserous and submucous plexuses, all subdivisions of the enteric plexus. Synonym(s): plexus (nervosus) myentericus [TA], Auerbach plexus