decidua

/dih-sij-oo-uh/US // dɪˈsɪdʒ u ə //UK // (dɪˈsɪdjʊə) //

蜕皮,蜕变,癸癸,颓废的人

Definitions

n.名词 noun

1
plural de·cid·u·as, de·cid·u·ae [dih-sij-oo-ee]. /dɪˈsɪdʒ uˌi/. Embryology.
- : the endometrium of a pregnant uterus that in many of the higher mammals is cast off at parturition.

For the human embryo is developed with a genuine decidua, and is thus absolutely distinguished from all the Indeciduata.
These latter never possess a decidua, whereas Elephants and Hyrax are genuine Deciduata.
Hydrorrhoea gravidarum is an intermittent discharge of clear or bloody fluid from a catarrhal endometritis under the decidua.
Folds of this nature, which are specially developed in Man and Apes, are known as a decidua reflexa.
The decidua reflexa of the Rat is reduced to extreme tenuity, or even vanishes before the close of gestation.