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多选题
About the normal constriction of the ureter, which of the following descriptions are correct?
A
Each ureter has three normal constriction.
B
The first normal constriction is at the the junction between the renal pelvis and the ureter.
C
The second normal constriction is at the brim of the lesser pelvis.
D
The third normal constriction is at the place where the ureter passes through the bladder wall.
E
The stone of ureter is easily lodged in these three normal constrictions.
答案解析
正确答案：ABCDE
