Describe the uterine or menstrual cycle. Include a summary of the three cycles. How long does menstruation typically last? When does ovulation occur? Why is the date of ovulation often difficult to predict?

Reproductive System and Basic Genetics

Describe the hormones controlling the female reproductive system. Include in your discussion the role of GnRH, FSH, LH, estrogen, and progesterone.

List and describe the three phases of the ovarian cycle. Include the structures and varying hormone levels involved.

Describe the uterine or menstrual cycle. Include a summary of the three cycles. How long does menstruation typically last? When does ovulation occur? Why is the date of ovulation often difficult to predict?

How do the artificially produced hormones in contraceptive pills prevent pregnancy in women who take the pills regularly as prescribed?