有人觉得“抠肚脐比较用力会有尿意”，背后的原因是什么？还记得我们刚刚说的由脐尿管退化形成的脐膀胱韧带吗——一种猜测是用力抠肚脐时会通过这条韧带刺激膀胱，从而引起排尿反射。至于“花椒放在肚脐能缓解便秘助消化”的偏方，则缺乏解剖结构和实验证据的支持。
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