2. Today Spermatogenesis Oogenesis Hormonal control of menstrual cycle Fertilization

3. Spermatogenesis Process Location(s) When

4. Oogenesis Process Location(s) When

5. Hormones – Biofeedback FSH – follicle stimulating hormone Released by pituitary gland Stimulates follicle development (where the egg is) Stimulates follicle to release Estrogen The increase in estrogen in the blood triggers the pituitary to release luteinizing hormone (LH) Triggers release of egg from follicle Stimulates follicle to form corpus luteum Corpus luteum releases estrogen and progesterone

6. Hormones – Biofeedback Stimulates follicle to form corpus luteum Corpus luteum releases estrogen and progesterone Progesterone (along with estrogen) promotes thickening of uterine walls (for implantation) If zygote doesn’t implant, corpus luteum degenerates Leads to decrease in progesterone and estrogen Leads to increase in FSH… And the cycle continues

7. Hormones – Biofeedback

8. Homework

9. Hormones – Biofeedback Stimulates follicle to form corpus luteum Corpus luteum releases estrogen and progesterone Progesterone (along with estrogen) promotes thickening of uterine walls (for implantation) If zygote doesn’t implant, corpus luteum degenerates Leads to decrease in progesterone and estrogen Leads to increase in FSH… And the cycle continues