1. By: McKenzie Gray and Bethany Sprauer

2. What kind of hormone is it? They are a group chemically similar to steroids A series of chemical reactions spurred by enzymes that remove and add groups to cholesterol core Steroid  pregnenolone  androgens Aromatase enzymes convert androgens to estrogens

3. Where does it come from The major source is the ovaries and placenta Small amounts in -male testes -adrenal glands -brain -fat Produced in small but significant amounts regularly

4. What does it do? Causes uterine lining to thicken during menstruation in preparation for pregnancy Stimulates growth of breast tissue Maintains blood flow to the vagina Helps development and operation of the female reproductive tract essentially the hormone that creates sexual feelings and urges in females, both human and animal alike keeps the body from ovulating while a woman is pregnant, along with progesterone, another female hormone Lowest/highest

5. Negative or positive? Negative Starts in hypothalamus then to the pituitary and then to the FSH to turn on or off

6. What is it? There are 3 major hormones that make up the estrogens Estradiol: most common type of estrogen measured in non- pregnant women, varies through menstrual cycle, drops very low during menopause Estrone: may be measured in women during menopause to check estrogen levels, also measured in men and women who may have cancer of the ovaries, testicles, or adrenal glands Estriol: usually only measured during pregnancy, produced in large amounts by placenta Estradiol is the predominate one

7. hyper early secretion of high levels of estrogen Early appearance of puberty

8. Hypo Decreased in egg production Other sexual functions