09-07-2007, 03:24 PM
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pixie of the wood
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Join Date: Apr 2004
Posts: 10,575
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found this on a google search titled physiological reason for needing to urinate after defecating: (btw the site is called poopreport.com lmfao again)
The pelvic floor muscles relax when we defecate. However, they will not necessarily have to fully relax when we urinate. But when the pelvic floor musculature does relax, in addition to allowing stool to pass, it decreases the tension in our urinary sphincters, allowing urine to flow. Because our anal sphincters are stronger than our urinary sphincters, it is easier for us to have control over our bowels than our urine.
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