How does the birth of child
take place
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when sperm enters ovam or egg
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when gestation period i.e development of embryo is completed the birth time of baby comes .at this stage the muscles of uterus start contraction and expansion. the rapid and strong contraction of urteus muscles is called Labour.at the time of Labour the pituitary glands secrete a hormone called oxytocin. as a result of Labour birth of baby take place.
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