AVH is a pair of interneurons with cell bodies in the lateral ganglia. Processes from the cell bodies enter the nerve ring sub-dorsally and cross over to the contralateral side. They then travel ventrally round the ring, running near the middle of the neuropile, and leave it to enter the ventral cord. The processes of AVH run in the dorsal regions of the cord and end in the pre-anal ganglion. The chemical synapses made by AVH are rather small, with few synaptic vesicles. The main synaptic outputs are to AVJ (c), PVP, SMB (b), ADF (a) and RIR (a) in the nerve ring. In the ventral cord there are synapses to and from AVF (d, *c) as well as gap junctions to AVF and also a few synapses from PHA. Magnifications: (a) x 25500, (b-d) x 17000.
|partners||gap junctions||synapses from||synapses to and corecipients|
|AVF||8||3+5m||2AVH, 2AVF, PVQ|
Web adaptation, Thomas Boulin, for Wormatlas, 2001, 2002