Amnion (Noun)
Meaning
Thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals).
Classification
Nouns denoting animals.
Examples
- The amnion provides a protective environment for the developing fetus by filling with fluid that cushions and supports its growth.
- In reptiles and birds, the amnion is a key structure that allows the embryo to develop outside of water.
- During fetal development, the amnion ruptures to release the baby from the womb.
- The amnion is one of the four extraembryonic membranes that develop in the early stages of vertebrate embryogenesis.
- The fluid inside the amnion, known as amniotic fluid, serves as a shock absorber and helps to regulate the temperature of the fetus.