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Question
What changes occur at the time of birth?
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Solution
A cycle of uterine contractions followed by labour pains, dilation of the cervix and the vagina slowly pushes the fetus out of the uterus. The uterine contractions are initiated by decreased progesterone secretion and the secretion of oxytocin hormone by the pituitary gland. After the child's delivery, the placenta is expelled out.
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RELATED QUESTIONS
Given below are the names of certain stages/substances related to reproduction and found in human body. Answer the questions related to them.
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