Gestation: implantation → placentation → fetal development → parturition. Human: ~40 weeks. Hormonal support by hCG (corpus luteum rescue), then placental progesterone + estrogen.
Gestation: implantation → placentation → fetal development → parturition. Human: ~40 weeks. Hormonal support by hCG (corpus luteum rescue), then placental progesterone + estrogen.