RMH is a set of two motoneurons which innervate muscles in the head via NMJs in the nerve ring. The cell bodies of RMH are situated in the ventral ganglion and send out anteriorly directed processes, which enter the nerve ring and run round it near the inside surface to the contralateral side. Here they form two looped structures which have regions of NMJs symmetrically disposed about the lateral line. Some of the NMJs are intercepted by dendrites from RMD (a). The main source of synaptic input is from RIG (b) and CEP (c). There are gap junctions to RMG (d). Magnifications: (a) x 25500, (b-d) x 12750.
Web adaptation, Thomas Boulin, for Wormatlas, 2001, 2002