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Answer any three of the following (restr...

Answer any three of the following (restrict each answer 2 to 3 important sentences).
What are gestation and parturition?

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Gestation and Parturition
The time period during which the embryo remains in the uterus, i.e. after the last day of menstruation to the day of parturition is called gestation. In humans, it lasts for about 9 months.
Vigorous contraction of the uterus at the end of pregnancy causes expulsion or delivery of the foetus. This process of delivery of the foetus (child birth) by neuroendocrine mechanism is called parturition.
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