Members: PDA.
PDA is a single motoneuron that innervates posterior dorsal
body muscles. Its cell body is situated at the posterior end of the
pre-anal ganglion and has a large amoeboid nucleus (d). A process
leaves the cell body and runs round to the dorsal cord via the right
hand lumbar commissure (e). This process then runs anteriorly for
some distance in the dorsal cord (the location of its end point has
not been determined). PDA has few synaptic contacts; in the
ventral cord and the commissure region, there is a triadic synapse to PVN, DA9 and a hypodermal cell (c), and in the dorsal cord there are a
couple of NMJs (a) and a synapse to DD6 (b). PDA receives a
single, but fairly prominent, synapse from DVB. Magnifications: (a-c)
x 25500, (d) x 12750.
Click pictures for higher resolution images
