1 Follicle-stimulating hormone - FSH 2 Luteinizing hormone - LH 3 Progesterone 4 Estrogen 5 Hypothalamus 6 Pituitary gland 7 Ovary 8 Pregnancy - hCG (Human chorionic gonadotropin) 9 Testosterone 10 Testicle 11 Incentives 12 Prolactin - PRL