Amnios (Noun)
Meaning
Thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals).
Classification
Nouns denoting animals.
Examples
- In the human womb, the developing fetus is initially enveloped in a protective layer known as the amnios.
- The amnios facilitates respiration and overall development of a reptile embryo by providing a protective atmosphere.
- Scientists make use of cells from the amnios to identify genetic traits of a mammalian fetus during prenatal tests.
- Throughout gestation in birds, the amnios prevents excessive water loss while sustaining the required osmoregulation for proper embryo development.
- Imbalances or disorders related to the amnios can potentially result in congenital complications during mammalian gestation.