Also: Level of sexual hormones are in prenatal development quite high. But it decreased and stopped to be synthesized after birth.
Second start of increasing sexual hormones is 4 years before forming secondary sexual characteristics.
gonadotropíny uvoľňujúci hormón (GnRH)
do hypotalamo-hypofýzového portálneho systému
Differencies of secretion GnRH affect secretion LH.
luteinizačný hormón (LH)
folikulo-stimulačný hormón (FSH)!
Transported by blood to ovaria.
They control folliculus maturing in ovaria and steroid hormones production.
estrogen
progesteron
key role in forming secondary sexual characteristics