Hormones in Ovulation

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FSH

Follicle-Stimulating Hormone Produced by pituitary gland Small rise in first half of cycle followed by peak at day 14 Promotes the development of the primary follicle

GnRH

Gonadotropin Releasing Hormone Produced by the hypothalamus to stimulate to pituitary gland to produce LH and FSH

LH

Lutenising Hormone Produced by pituitary gland Single peak at day 14 Triggers ovulation (follicle rupture) at peak

Profile of Oestrogen Over Ovulation

Peak of oestrogen just prior to ovulation, drop then positive curve while corpus luteum is active

Profile of Progesterone Over Ovulation

Positive curve of progesterone spanning ovulation to menstuation

Corpus Luteum

Produces mainly progesterone and some eostrogen On fall of LH level corpus luteum degenerates


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