小肠在腹部是怎样盘曲的
http://news.xinhuanet.com/health/2006-08/24/content_5001463_28.htm
参考资料:http://news.xinhuanet.com/health/2006-08/24/content_5001463_28.htm
http://news.xinhuanet.com/health/2006-08/24/content_5001463_28.htm
参考资料:http://news.xinhuanet.com/health/2006-08/24/content_5001463_28.htm