Amnionische

Amnionische is an adjective meaning related to the amnion, the innermost fetal membrane that surrounds the developing fetus during pregnancy. It is used to describe structures or substances associated with the amnion. The amnion, together with the chorion, forms the amniotic sac and contains amniotic fluid, which cushions and protects the fetus.

The amnion consists of an epithelial layer and underlying mesenchyme. It originates early in embryogenesis from cells of the inner cell mass that form the amniotic cavity. As development proceeds, the amnion expands to envelope the embryo and eventually fuses with the chorion to become part of the fetal membranes.

Functions include providing mechanical protection, temperature regulation, and a stable environment that supports fetal movement and development. The amniotic fluid is derived from fetal urine and transudation across the membranes, creating a buoyant medium that facilitates growth.

Clinical relevance: In obstetrics, the term appears in contexts such as amniotic membranes and amniotic fluid. Complications can involve rupture of membranes (premature rupture of membranes) or amnion disruption that may lead to conditions such as amniotic band syndrome. In English, the equivalent terms are "amniotic" or "amnion-related," used to describe anything pertaining to the amnion.

See also: amnion, amniotic fluid, placenta, fetal membranes.