What is the normal size of the gestational sac at six weeks?
Gestation refers to the period when the fetus grows and develops in the uterus. It is the time between the conception and birth of the embryo. Beginning with fertilization, it ends with the birth of the baby. A gestational period describes the length of the pregnancy period and can range between 38 to 42 weeks. What is a gestational sac? A gestational sac is a spherical shaped fluid-filled cavity that is present around the embryo. It is situated in the upper part of the uterus’s fundus. Appearing as an echogenic ring, it surrounds a sonolucent center. The availability of this structure within the womb is the only indication of pregnancy, before the identification of the embryo. The gestational sac encloses the baby that is developing. It contains extraembryonic coelom or the chorionic cavity in the early stages of embryogenesis. The amniotic fluid is also found in it. It is located around a white rim and is a dark space itself. Structure and Developmen...