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.
These latter never possess a decidua, whereas Elephants and Hyrax are genuine deciduata.
The decidua reflexa and serotina together envelop the chorion, the processes of which fit into crypts in them.
Although he was the undoubted discoverer of the reflexa, the existence of the decidua was distinctly noticed by Burton, in 1751.
The chorion frondosum, together with the decidua serotina, gives rise to the placenta.
Hydrorrhoea gravidarum is an intermittent discharge of clear or bloody fluid from a catarrhal endometritis under the decidua.
The decidua reflexa, on the disappearance of the vessels in the chorion lve, becomes non-vascular.
The outer one of these is the inner lining of the womb itself, known as the decidua vera.
At its edge it is continuous both with the decidua reflexa and decidua vera.
decidua de·cid·u·a (dĭ-sĭj'ōō-ə)
n. pl. de·cid·u·as or de·cid·u·ae (-ōō-ē')
A mucous membrane lining the uterus, modified during pregnancy and shed at parturition or during menstruation. Also called deciduous membrane.