A member asked:

I had a random question, is there skin on the inside of our urethra that is blocking the urine? like for example the urine cant get back in the body right? also vice versa nothing can fall into the urethra right?

3 doctors weighed in across 2 answers
Dr. Hunter Handsfield answered

Specializes in Infectious Disease

Largely duplicate question; see two other replies. If you're having symptoms involving your urethra, urination, ejaculation, or appearance of your semen, you can post another question to describe them. Otherwise, it seems you shouldn't be worried.

Answered 3/19/2023

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The lining of the urethra is different from the lining of the skin and does not block the flow of urine. If the cells are shed they get washed out by the flow of urine.

Answered 3/19/2023

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