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Ureters

By

Glenn M. Preminger

, MD, Duke Comprehensive Kidney Stone Center

Reviewed/Revised Apr 2022 | Modified Sep 2022
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Topic Resources
The Ureters, Bladder, and Urethra
VIDEO

Urine formed in the kidneys flows through the ureters into the bladder, but it does not flow passively. The ureters push each small amount of urine along in waves of contraction, at low pressure. At the bladder, each ureter passes through an opening in the bladder wall, which closes when the bladder contracts to prevent urine from flowing back into the ureter (reflux).

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