Question

Most oral contraceptives (birth control pills) contain estrogen and progesterone. Use your understanding of the hormones involved in the ovarian and uterine cycles to explain how pregnancy is prevent when birth controls pill area used.

Can you explain this clearly please, not in diagram form thank you

Answer 1

Estrogen and Progestrone are the hormones involved in the maintaining the menstrual cycle.Estrogen hormone provides the positive feedback for Lutenizing hormone. Increases level of Estrogen and progestrone inhibit the secretion of FSH and LH for the menstrual cycle. And FSH and LH are necessary for the development and release of Ovum.They also make the uterine wall imcompetent for the implantation.Thus Progestrone and Estrogen prevent the development of ovum and Ovulation,altering the menstrual phases ,help in preventing the pregnancy .