论文部分内容阅读
人的生命缘于一个受精卵,这个受精卵在母体中不断分化和生长发育,历经280天成长为成熟的胎儿,最后经母体的产道分娩而诞生一个新的生命。那么,胎儿在母体280天的生长过程中,发生了哪些变化呢?这一讲中,我们就以4周为一个孕龄单位,来谈谈胎儿在母体孕育过程中的变化。首先需要说明的一点是,妊娠开始的8用称为胚胎,是胎体主要器官分
Human life is due to a fertilized egg. The fertilized egg continuously differentiates and grows in the mother. After 280 days, it grows into a mature fetus. Finally, a new life is born through the birth of the mother. So, the fetus in 280 days of maternal growth process, what happened? In this talk, we will be 4 weeks as a gestational age unit, to talk about the fetus during pregnancy in the process of change. The first thing to note is that the beginning of pregnancy 8 is called the embryo, is the main organ of the carcass