placenta
The protective sac around the embryo or fetus is the amniotic sac.
The chorionic membrane is the outer sac which surrounds the developing fetus
the fetus is in the yolk sac
No, a sac grows to accommodate the fetus and if the fetus us dead it does not grow anymore.
Amniotic sac and fluid has a protective functions for the fetus. This sac separates the fetus from the mothers tissue.
sac in which the fetus develops in amniotes
it is the amneotic fluid.
The Amniotic Sac is the sac that contains the baby.
the womb or amniotic sac
fetus
amniotic sac
Amniotic sac