What Is the Gestational Sac?
The gestational sac is a structure that surrounds an embryo, which is a baby in the very early stages of development. It encloses not only the embryo, but also the amniotic fluid, which helps to nourish and protect the developing baby. The gestational sac is the structure ultrasound technicians look for when they need to confirm the presence and viability of an early pregnancy. In fact, it may be the first pregnancy structure ultrasound technicians can see in early pregnancies.
