MSD Manual

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Ureters

By

Glenn M. Preminger

, MD, Duke Comprehensive Kidney Stone Center

Last full review/revision Jun 2019| Content last modified Jun 2019
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Topic Resources

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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Test your knowledge
Urethritis
Urethritis is an infection of the urethra, the tube that transports urine out of the body from the bladder. Many organisms can cause urethritis. Which of the following is an organism that commonly causes urethritis in men, but is more likely to infect reproductive organs in women?  
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