The inner of these membranes, the amnion, encloses the amniotic cavity, containing the amniotic fluid and the embryo. The outer membrane, the chorion, contains the amnion and is part of the placenta.

The bag of waters - or amniotic sac - is a bag or "membrane filled with fluid that surrounds your baby in your uterus during pregnancy." The bag of waters is very important to your baby's health.

Amniotic fluid is the fluid that surrounds a fetus during pregnancy. When the amniotic sac breaks, known as the rupture of ...

Viewer discretion is advised. A video from a Spanish hospital captures the moment a baby is born within the amniotic sac, an occurrence that only happens 1 in every 80,000 births. It is also known ...

But it's lovely to look at these pics of one baby boy being born after the other – and to see the second twin being born still in his 'waters' (amniotic sac). The picture above was voted Image of the ...

The odds of giving birth to your baby en caul (inside the amniotic sac) are said to be 1 in 80,000. So we can’t imagine what the odds were for this mum’s birth story to actually happen. 1 in a million ...

Yolk sac is then infiltrated with a system of blood vessels, carrying nutrients from the yolk back to the embryo. Other extra-embryonic folds expand up over the embryo to form the amniotic folds. The ...

Yolk sac is then infiltrated with a system of blood vessels, carrying nutrients from the yolk back to the embryo. Other extra-embryonic folds expand up over the embryo to form the amniotic folds. The ...

That’s when she saw the doctor’s jaw drop. O’Neil’s amniotic sac, the fluid-filled structure that surrounds a growing fetus, was exposed. When someone goes into labor, the sac typically ...

A physician finally entered the room where O’Neil was waiting and started to perform a vaginal exam. That’s when she saw the ...

Monoamniotic-monochorionic twins, aka "momo" or "mono-mono" twins, share an amniotic sac and placenta. Here's what to know about pregnancy with mono-mono twins. MoMo or mono-mono twins are ...