Q. What is the difference between amnion and chorion?
Amnion is the membrane that covers the embryo and Chorion is the membrane that covers the amnion the allantois and the yolk sac. The space delimited by the amnion and the chorion is called amniotic cavity and it is filled with aminiotic fluid. The amniotic cavity has the functions of avoiding desiccation of the embryo and of protecting it against mechanical shocks.