Related words：幼儿 婴儿 胎儿
胎儿，是指妊娠8周以后娩出的胎体。
妊娠4～8周娩出的胎体为胚胎。胚胎期重要器官逐渐形成，在胎儿期各器官进一步发育成熟，孕期在妊娠28周以前娩出的现象称为流产；
孕28～37周前娩出的现象称为早产，孕37周至不满42足周娩出的现象称为足月产。
The fetus, refers to eight weeks of pregnancy after childbirth carcass. 4-8 weeks of pregnancy the carcass for embryo themselves. Embryonic stage, gradually formed in the vital organs fetal organs during pregnancy, mature further in pregnancy before 28 weeks of childbirth phenomenon known as abortion, At 28-37 weeks premature, the phenomenon called themselves at 37 weeks to discontent and foot of childbirth weeks' gestation phenomenon called.
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