点击图片查看原图
一、肚脐是脐带残端的“遗迹”
要说肚脐是怎么形成的，就要先说说脐带。我们都知道每个胎儿都要在母体中孕育十个月左右才会来到这个世界。在这段漫长的时间里，胎儿是如
%B0%FC%DA%41%EB%8A%D7%D3%B0%6C%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%B0%FC%DA%41%EB%8A%D7%D3%B0%6C%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%B0%FC%DA%41%EB%8A%D7%D3%B0%6C%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%B0%FC%DA%41%EB%8A%D7%D3%B0%6C%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF