has part has part has_part characteristic of part of has modifier abnormal spiral modiolar artery morphology spiral modiolar artery stenosis MPheno.ontology MP:0004630 abnormal narrowing or constriction of the artery which parallels the spiral ganglion in the root of the spiral lamina of the modiolus and serves the ganglion and the cochlear duct and its contents artery stenosis abnormal constricted spiral modiolar artery