Pregnancy weeks 41|免費玩健康App


免費健康App|Pregnancy weeks 41|阿達玩APP

Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, in the womb of a woman. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Childbirth usually occurs about 38 weeks after conception; in women who have a menstrual cycle length of four weeks, this is approximately 40 weeks from the last normal menstrual period (LNMP). The World Health Organization defines normal term for delivery as between 37 weeks and 42 weeks. Human pregnancy is the most studied of all mammalian pregnancies.

免費健康App|Pregnancy weeks 41|阿達玩APP

The term embryo is used to describe the developing offspring during the first 8 weeks following conception, and the term fetus is used from about 2 months of development until birth.

免費健康App|Pregnancy weeks 41|阿達玩APP

In many societies’ medical or legal definitions, human pregnancy is somewhat arbitrarily divided into three trimester periods, as a means to simplify reference to the different stages of prenatal development. The first trimester carries the highest risk of miscarriage (natural death of embryo or fetus). During the second trimester, the development of the fetus can be more easily monitored and diagnosed. The beginning of the third trimester often approximates the point of viability, or the ability of the fetus to survive, with or without medical help, outside of the uterus.

免費健康App|Pregnancy weeks 41|阿達玩APP

Disclaimer: This software does not provide a diagnosis nor medical advice, and only provides general knowledge.

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