korionkalvo

Korionkalvo, also known as the amniotic sac, is a thin membrane that surrounds the developing fetus during pregnancy. It is filled with amniotic fluid, which plays a crucial role in fetal development and protection. The amniotic sac is formed from the inner cell mass of the blastocyst, which differentiates into the amnion and the chorion. The amnion is the innermost layer, directly enclosing the fetus and amniotic fluid. The chorion is the outer layer, which fuses with the amnion to form the complete amniotic sac.

The amniotic fluid within the sac provides a sterile, temperature-controlled environment for the fetus. It cushions the fetus from external shocks and impacts, preventing injury. The fluid also allows the fetus to move freely, which is essential for muscle and bone development. Furthermore, the amniotic fluid helps to prevent the umbilical cord from being compressed, ensuring a continuous supply of oxygen and nutrients to the fetus. As pregnancy progresses, the fetus swallows and inhales the amniotic fluid, which aids in the development of its digestive and respiratory systems.

The amniotic sac typically ruptures around the time of labor, leading to the release of amniotic fluid, commonly referred to as "water breaking." This event signifies the onset of labor and delivery. In some cases, the amniotic sac may not rupture on its own and may require medical intervention. The integrity of the amniotic sac is vital for a healthy pregnancy, and any abnormalities can lead to complications.