No, a chorion is not an ovarian sac. The chorion is an outer embryonic membrane in mammals that plays a crucial role in the formation of the placenta and in the exchange of nutrients and gases between the mother and the developing embryo. In contrast, an ovarian sac typically refers to the structure that contains and protects the developing egg in the ovary.
Ovary
The ovarian sac is also known as the follicle.
There is no such thing as an "ovarian sac". The amnion is a membrane building the "amniotic sac" that surrounds and protects an embryo.
The allantois, yolk sac and part of chorion.
The allantois, yolk sac and part of chorion.
Ovarian follicle
An ovarian cyst is a sac of fluid that forms on or in an ovary. An ovarian cyst with coefficient 7.813 is considered to be moderately abnormal.
Amnion is the membrane that covers the embryo. Chorion is the membrane that covers the amnion, the yolk sac, and the allantois. The space delimited by the chorion and the amnion is called amniotic cavity and it is filled with aminiotic fluid. The amniotic cavity has the functions of preventing desiccation of the embryo and of protecting it against mechanical shocks.
an ovarian cyst is closed, sac like structure within an ovary that contain a liquid, gaseous or semisolid substance.
When an ovarian cyst ruptures, the fluid ends up in the cul-de-sac due to gravity.
The extra-embryonic membranes that surround a fetus include the amnion, chorion, allantois, and yolk sac. The amnion forms a protective sac filled with amniotic fluid, providing cushioning. The chorion contributes to the formation of the placenta and facilitates nutrient exchange. The allantois is involved in waste management and gas exchange, while the yolk sac provides early nourishment before placental circulation is established.
The fetal membrane layers are the amnion and chorion. The amnion is the innermost layer that surrounds the fetus and is filled with amniotic fluid, providing protection and cushioning. The chorion is the outermost layer that helps form the placenta and plays a role in nutrient and waste exchange between the mother and the fetus.