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
%BF%C9%BF%D8%D7%AF%CF%D0%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%BF%C9%BF%D8%D7%AF%CF%D0%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%BF%C9%BF%D8%D7%AF%CF%D0%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%BF%C9%BF%D8%D7%AF%CF%D0%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%BF%C9%BF%D8%D7%AF%CF%D0%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%BF%C9%BF%D8%D7%AF%CF%D0%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%BF%C9%BF%D8%D7%AF%CF%D0%C5%C6%D1%A5%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF




