Internal iliac arteryExternal iliac arteryCommon iliac arteryGonadal arteriesLeft kidneyLeft renal arteryRight renal arteryRight kidneyAbdominal aortaBladderUreterThird constriction—entrance to bladderSecond constriction—pelvic inletFirst constriction—ureteropelvic junctionUreter
Fig. 4.156 Low-dose axial CT of urinary tract (CT KUB) displays stone in left renal pelvis.