What are the Important Features of Ureter Pathway For Anatomy: -I Do Know It Start From Renal Pelvis to Posterior Lateral Side of the Urinary Bladder...

What are the Important Features of  Ureter Pathway For Anatomy:

-I Do Know It Start From Renal Pelvis  to Posterior Lateral Side of the Urinary Bladder 

- That it has 3 Constrictions : Pelvic Ureter Junction , Pelvic Brim ,and Vesicoureter

But my exam will be about pecularities of its passage as well as Blood vessels and innervation which i cant seem to get my fingers around.