this is called the placenta
The fluid-filled sac surrounding the developing embryo or fetus is called the amniotic sac. It is filled with amniotic fluid that protects and cushions the fetus, helping to regulate its temperature and provide room for movement.
the fetus is in the yolk sac
The fertilized egg (which develops into a baby eventually) implants itself into the uterine wall/lining. The lining surrounds the egg as it matures and develops into a fetus and a placenta and amniotic sac surrounds the fetus eventually to nourish it.
No, a sac grows to accommodate the fetus and if the fetus us dead it does not grow anymore.
The protective sac around the embryo or fetus is the amniotic sac.
The fetus is in the uterus and when pregnant there's a mucus plug closing the entrance to the uterus so semen or anything else can not enter when you are pregnant.
Amniotic sac and fluid has a protective functions for the fetus. This sac separates the fetus from the mothers tissue.
The amniotic sac is the sac in which the fetus develops in amniotes. Its wall is the amnion, the inner of the two fetal membranes. It encloses the amniotic cavity and the embryo.
sac in which the fetus develops in amniotes
The fetus is enclosed in the amniotic sac, which is a fluid-filled membrane that provides protection and cushioning during pregnancy.
Myoardium s the muscle of the heart. Pericardium is the serous sac surrounding it and endocardium is the lining of the heart itsself. Celtic FC ;)
The Amniotic Sac is the sac that contains the baby.