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What is pregnancy ?

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What is pregnancy ?
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Yogita Ingle 6 years, 4 months ago

Pregnancy occurs when the sperm fertilizes the egg, and the zygote is formed. The zygote gets implanted in the wall of the uterus. As soon as the implantation takes place, the need for nourishment and care arises as the growth of the zygote develops into an embryo which further grows into a baby. This responsibility is taken up by a layer formed between the baby and the mother, called the placenta. The placenta is formed by finger-like projections called chorionic villi and the uterine tissue. 

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