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Role of luteinising hormone is;Stimulates ovulationStimulates remaining graafian follicle to form corpus luteumStimulates corpus luteum to release progesterone
Role of progesterone hormone is;Responsible for proliferation of uterus in readiness for implantation.Maintains pregnancy
Role of androgen hormone is;Testosterone is responsible for development of male sexual characteristics.Stimulates spermatogenesis
Role of follicle stimulating hormone is;Responsible for growth of graafian folliclesStimulates ovarian tissues to secret oestrogen
Role of the placenta in placental mammals include;It is the site for exchange of materials between the foetus and mother.It is a mechanical barrier protecting the foetus against maternal blood pressure which could destroy delicate foetal capillaries.It secrets hormones oestrogen and progesteroneFrom the foetus to mother, substances that pass are carbon (iv) oxide and nitrogenous waste