文档介绍：怀孕第20周发育指南
宝宝发育指南 辣妈说
of rural drinking water sources, protection of drinking water sources in rural areas by t rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
· 营养指导
胎儿的视网膜形成了，此时要多吃富含锌、维生素A、维生素B6、维生素C、E的食物，这些对眼睛发育的作用很大 。
缺锌会导致视神经萎缩，暗适应异常，夜盲等。补充维生素A可以起到提高视力的作用；补充维生素C、E可以增强视网膜抗氧化能力，起到保护视细胞的作用；补充维生素B6能够营养视神经，有助于增强视神经的传导功能。宝宝的亮眼睛全靠现在创造咯！
另外，孕妈咪要注意防止便秘，多吃含粗纤维的食物，如绿叶蔬菜、水果等，每天至少喝六杯开水，有浮肿的妈咪晚上少喝水，白天要喝够量。
· 孕期检查
一般在20～24周左右的时候可以做彩超产前排畸，四维彩超可立体显示胎儿的颜色、面孔、各器官的发育情况，甚至胎儿在母体里的状态。它会帮助医生检查宝宝的生长情况、筛查某些出生缺陷、检查胎盘和脐带、确定你的预产期是否准确。
在检查过程中，可以请检查人员把屏幕朝向你，这样你就可能看到宝宝在四处活动或在吸吮他的手
宝宝发育指南 辣妈说
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities