Study the flow chart given below. Name the hormones involved at each stage and explain their role. -Biology

Study the flow chart given below. Name the hormones involved at each stage and explain their role. -Biology
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Ovulation Induced by LH secreted from anterior pituitary. LH also stimulates the formation of corpus luteum and secretion of progesterone from it. Pregnancy Progesterone is necessary for maintaining pregnancy and for the differentiation of alveoli in the mammary glands during pregnancy for producing milk during lactation. ‘ Placenta and foetal growth It secretes human chorionic gonadotropin that is necessary for foetal growth. It also secretes human placental lactogen for milk production. Parturition Foetal ejection reflex stimulates the secretion of oxytocin which induces stronger contractions of uterine muscles leading to parturition.  
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