foetal membranes
Four foetal membranes enclose the developing embryo. These are also called the extra embryonic membranes:Amnion: It is a thin membrane that encloses a fluid-filled sac, the amniotic sac. The fluid is called the amniotic fluid. It protects the embryo. Ionic exchange takes place between the mother’s blood and embryonic body.
Chorion : This membrane covers the amnion and fuses with the allantoes to form allantochorion. Placental villi develop on the surface of the allanto-chorion.medical billing training helps in these fo medical coding and billing for the proper payment and colltionand for the hipaa compliance and for the reimbursement and pays for that.
