The Estrogen
Estrogen is one of a group of hormones, estrone (E1), estradiol(E2), and estriol (E3) that primarily influence the female reproductive tract, in its involvement in its development, maturation and its reproductive function. Hormones makes up the body's endocrine system, they are chemical messengers that function to regulate many of the normal everyday body processes we take for granted such as temperature control, (homeostasis) blood pressure control, fertility and sexual desires.