- the chorion.
- a similar membrane in insects and other lower invertebrates.
Words nearby serosa
How to use serosa in a sentence
Indusium: the case made by an insect larva: a membranous layer of the embryo of Locustidae below the serosa.
Serosa: the outer membrane that envelops the forming embryo, the amnion and the remainder of the egg.
Ventral plate: a thickening of the blastoderm of an egg from which the embryo, but not the amnion or serosa is formed.