Final answer:
Progesterone plays a vital role in reproductive processes, including the maturation of reproductive organs, preparation of the uterus for pregnancy, and regulation of the menstrual cycle. It also inhibits uterine contractions in early pregnancy and later decreases to allow contractions to intensify.
Step-by-step explanation:
Progesterone plays a crucial role in the feedback system for reproductive processes. It is involved in the maturation and maintenance of reproductive organs, preparation of the uterus for pregnancy, and regulation of the menstrual cycle. In pregnancy, progesterone inhibits uterine contractions during the first few months and then decreases to allow contractions to intensify. It also suppresses FSH and LH and protects the fetus from preterm birth.