AIM is a set of two interneurons with cell bodies in the ventral
ganglion behind the excretory
duct. Processes run anteriorly from the cell bodies, adjacent to the
lateral surfaces of the ventral
cord. On entering the nerve ring they move round to the inside
surface until they reach a
sub-dorsal position, where they loop out into the middle of the
neuropile and then return to
the inner surface until the processes meet and terminate with a gap
junction on the dorsal
mid-line. The main synaptic output is to AIA, usually in association
with ASG (a) or ASK
as dyadic partners. Synapses are also made to ASJ (b), AVF, the
cephalic sheath cells (c) and
a few other minor partners. There is not much synaptic input except
for a few synapses from
ASK (*c). There are gap junctions to SIBD (d) (there was only one
present in the U series
but there is one on each side in the H series).
Magnifications: (a-d) x 25500.
Web adaptation, Thomas Boulin,
for Wormatlas, 2001, 2002
