overlaps overlaps in taxon motor neuron myotube neuromuscular junction synapse neuromuscular junction of myotube A neuromuscular junction in which the target muscle cell is a myotube. GO:0098523 In vertebrates, the term 'neuromuscular junction' is limited to synapses targeting the myotubes of skeletal muscle (AKA skeletal muscle fibers). Neuromuscular junctions targeting other muscle cell types exist in invertebrates such as the mononucleate somatic muscles of nematodes. 2013-10-14T12:05:12Z dos Eumetazoa