Fetus
Fetus refers to the carcass delivered after 8 weeks of pregnancy. The fetuses delivered at 4 to 8 weeks of pregnancy are embryos. The important organs in the embryo are gradually formed, and the organs are further developed and matured during the fetal period. The phenomenon of giving birth before 28 weeks of pregnancy is called abortion; the phenomenon of giving birth before 28 to 37 weeks of pregnancy is called premature birth, and it is delivered at 37 weeks to 42 weeks The phenomenon is called full-term delivery.
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