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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 androgen hormone is;Testosterone is responsible for development of male sexual characteristics.Stimulates spermatogenesis
Role of oestrogen hormone is;Bring about healing of uterine walls after menstruationResponsible for development of female secondary sexual characteristics
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