peripheral nervous system regeneration trait motor nerve terminal sprouting trait Any measurable or observable characteristic related to the ability of a motor neuron to form new neuritic processes (sprouts) that emerge from the nodes of Ranvier or terminal arborizations in response to nerve injury (such as denervation), application of nerve toxin, or muscle inactivity (usually due to disease). Trait.ontology VT:0004243 motor nerve collateral sprouting trait