Answer: serosa

AnswerCrossword Clue
SEROSAMembrane
SEROSAInsect membrane
SEROSAInternal membrane
serosaany of various thin membranes, as the peritoneum, that line certain cavities of the body and exude a serous fluid
serosaa. the chorion b. similar membrane in insects and other lower invertebrates
serosaa thin membrane lining some bodily cavities