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AVJ is a pair of interneurons with cell bodies in the lateral ganglion. Processes from the cell
bodies enter the ring sub-dorsally and then run round it to the contralateral side near the centre
of the neuropile, in close association with the processes of AVB. The processes of AVJ then leave
the ring ventrally and traverse the length of the ventral cord, running immediately adjacent
and dorsal to the processes of AVB and eventually petering out in the pre-anal ganglion. There
are few synapses from AVJ; and those that are present are rather small and have some
dark-cored vesicles. The main synaptic output is directed to PVC (a), AVB (a) and RIS (b)
in the nerve ring, and to AVE (d) and AVD in the ventral cord. The main synaptic input
is from BDU (*a), AVH (*c), ADA (*c), ADL, PVR (*b), RIF (*b), HSN and PVC in the
nerve ring and PVN (*b) and AVF in the nerve ring and ventral cord. AVJ has a prominent
gap junction with RIS in the neuropile of the ventral ganglion (c); RIS sends a short branch
down into the neuropile of the cord in this region. There are gap junctions to PVC (*h) in
the nerve ring and to AVD, PVC and itself in the ventral cord.
Magnifications: (a) x 25500, (b-d) x 17000.
AVJ ventral cord synapses
partners |
gap junctions |
synapses from |
synapses to and corecipients |
AVE |
- |
- |
2, 2AVD |
AVD |
2 |
- |
2AVE, AVA |
AVA |
- |
- |
AVD, SABV |
HSN |
- |
- |
1 |
PVN |
- |
2+4m |
1 |
AVB |
- |
- |
1 |
PVQ |
- |
- |
1 |
AVF |
- |
1+2m |
AVH |
AVH |
- |
1m |
AVF |
SABV |
- |
- |
AVA |
LUA |
- |
2m |
- |
PVW |
- |
1m |
- |
AVG |
- |
1m |
- |
AVJ |
4 |
- |
- |
PVC |
2 |
- |
- |
|
|
