GapjunctFIG 9: Gap junctions connect a linear array of homologous VA motor neurons.
A single VA neuron produces neuromuscular junctions (dark triangles) at any region along the A/P axis in the ventral nerve cord, with gap junctions (red lines) occurring exactly at the neuromuscular junction active zone limits between each successive VA motor axon along the chain. Open triangles represent dendritic inputs to each neuron. Several other classes of motor axons in the nerve cords have a similar organization of neuromuscular junction output zones delimited by gap junctions to their neighboring homologues, from head to tail. Anterior of the animal is to the left.
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