Most often, the amniotic sac will break of its own accord, most often by the beginning of the second stage of labor.
22.
Mammals typically lick their offspring clean immediately after birth; in many species this is necessary to free the newborn from the amniotic sac.
23.
The neurenteric canal is thought to play a role in the maintenance and adjustment of pressure between the amniotic sac and the yolk sac.
24.
Other methods of inducing labour include stripping of the amniotic membrane, artificial rupturing of the amniotic sac ( called amniotomy ), or nipple stimulation.
25.
After the birth, ewes ideally break the amniotic sac ( if it is not broken during labor ), and begin licking clean the lamb.
26.
The method would spare many women the need for a definitive test called amniocentesis, in which a needle withdraws fluid from the amniotic sac.
27.
:To be clear, the amniotic sac is the watertight barrier-but so far as I know, once the cervix has ripened sufficiently, its breakage is almost inevitable.
28.
She also is credited ( along with Fran�ois Mauriceau ) of finding a method to deal with a hemorrhaging placenta previa by puncturing the amniotic sac.
29.
The " en-caul " birth, not to be confused with the " caul " birth, occurs when the infant is born inside the entire amniotic sac.
30.
A fetus with its supporting tissue ( placenta, amniotic sac ) consists of foreign tissue which under other circumstances would be promptly rejected by the immune system.
