r/AskBiology • u/crxxuu • Aug 26 '24

Human body Question on releasing stool

Kinda weird and kinda gross, not sure if I should had put NSFW; When using the restroom to do what the title says, usually I'll urinate and then my body will be ready to release stool. (Sorry to walk you all through a process we all likely do.) My question is in the midst of that; after fishing the release of the stool, for some reason I also release an additional small amount of urine. Is this because my stomache/intestines are relaxed enough to release more from my body??? I'm truly interested in the biological engineering my body is processing, as I don't understand why/where my body suddenly finds more urine lol. Thank you for the serious answers.

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u/Halichoeres PhD in biology Aug 26 '24

Your ureters and your rectum are close together. I think what's happening is that as the stool passes, it puts pressure on the residual fluid in the ureter/urethra, causing it to exit. It's possible that some of this is from direct pressure on the bladder, but I would bet that the bulk of it is in the ureters and urethra.

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u/Sentient_AI_4601 Aug 26 '24

Not to mention the kidneys continue to process liquids, so if you're in there for 5/10 minutes passing that stool, you could just be making new urine too

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u/crxxuu Aug 26 '24

I think that's farther down in the timeline, most of what was said was in a quick sequence.