It's a network of nerves, like the solar one
IT'S THE 2-
WORD LATIN NAME FOR THOSE 2 BIG MUSCLES YOU SIT ON, GLUTEUS... [DOC] [TLE] solar plexus facts, information, pictures | Encyclopedia.com articles ... [PAR] A plexus such as this one, where most of the nerves belong to the autonomic ... 
Its widely-radiating incoming and outgoing nerves, linking the two coeliac... [DOC] [TLE] Nerve plexus - Wikipedia [PAR] A nerve plexus is a plexus (branching network) of intersecting nerves.