sympathetic ganglion morphology trait paravertebral ganglion morphology trait Any measurable or observable characteristic related to the shape, structure, color, or pattern of the groups of postsynaptic neurons located at intervals along the sympatheic trunk, including the superior cervical, middle cervical and stellate (cervicothoracic) ganglia as well as the thoracic, lumbar and sacral ganglia. VT:0015050 Trait.ontology smb 2010-04-21T04:14:52Z