Lack or deficiency of amniotic fluid.
Presence of congenital out-pouching of the umbilicus containing internal organs in the fetus or newborn infant.
Development of the organ systems in the embryo.
Regular production of hormones from the ovary in response to hormonal messages from the brain. The ovarian cycle governs the endometrial cycle.
Cyclical production of an egg from the ovary.
Medication that causes uterine contractions.