What develops into the chorion?
The chorion is a double-layered membrane formed by the trophoblast and the extra-embryonic mesoderm, which eventually will give rise to the fetal part of the placenta.
What does the allantois develop into?
The embryonic allantois becomes the fetal urachus, which connects the fetal bladder (developed from cloaca) to the yolk sac. The urachus removes nitrogenous waste from the fetal bladder.
What is fetal allantois?
Allantois refers to one of the fetal membranes that contributes to umbilical cord formation. It takes part in waste material collection and gas exchange. During embryonic development, the allantois transforms into urachus, which in turn becomes the median umbilical ligament.
What are the fetal membranes?
The fetal membrane surrounds the fetus during pregnancy and is a thin tissue composed of two layers, the chorion and the amnion. While rupture of this membrane normally occurs at term, preterm rupture can result in increased risk of fetal mortality and morbidity, as well as danger of infection in the mother.
What is yolk sac and allantois?
The yolk sac supplies food material to the embryo. The amnion, by enclosing the embryo, provides protection. The allantois serves as a respiratory organ and as a reservoir for the excreta. These temporary organs function within the egg until the time of hatching and form no part of the fully developed chick.
What is fetal membranes in placenta?
The fetal membranes are membranes associated with the developing fetus. The two chorioamniotic membranes are the amnion and the chorion, which make up the amniotic sac that surrounds and protects the fetus. The other fetal membranes are the allantois and the secondary umbilical vesicle.
What is fetal membrane and placenta?
The placental membrane separates maternal blood from fetal blood. The fetal part of the placenta is known as the chorion. The maternal component of the placenta is known as the decidua basalis.
What is the amnion and chorion?
1. Both the amnion and the chorion are extra embryonic membranes found in reptiles, birds, and mammals. 2. The amnion is the inner membrane that surrounds the embryo, while the chorion surrounds the embryo, the amnion, and other membranes.