Chorion - Wikipedia
The chorion is the outermost fetal membrane around the embryo in mammals, birds and reptiles (amniotes). It develops from an outer fold on the surface of the yolk sac, which lies outside the zona pellucida (in mammals), known as the vitelline membrane in other animals.
Chorion: Anatomy and function - Kenhub
2023年10月30日 — The chorion is the outermost of the four membranes surrounding the developing fetus, consisting of trophoblast and underlaying extraembryonic mesoderm. It is continuous with the the lining of the uterine wall (endometrium) superficially and is in contact with the amnion deep to it.
Fetal membranes - Wikipedia
The fetal membrane is composed of a thick cellular chorion covering a thin amnion composed of dense collagen fibrils. The amnion is in contact with the amniotic fluid and ensures structural integrity of the sac due to its mechanical strength.
Chorion - Definition, Explanation & Function - Biology Dictionary
2019年10月4日 — Chorion Definition. The chorion is one of the membranes that surround the fetus while it is still being formed. In mammals, the fetus lies in the amniotic sac, which is formed by the chorion and the amnion and separates the embryo from the mother’s endometrium.
Amnion vs. Chorion: 5 Key Differences, Pros & Cons,
Despite their differences, both the amnion and chorion are critical in ensuring a healthy and safe environment for the developing fetus. The amnion is the innermost fetal membrane, closest to the fetus itself. The chorion is the outermost fetal membrane, adjacent to the uterine wall.
Difference Between Amnion and Chorion
2018年2月26日 — The chorion, on the other hand, is the outer membrane that surrounds the amnion, the embryo, and other membranes and entities in the womb. It is considered as the support platform of the fetus and the amnion.
Chorion - Biology Simple
2024年3月2日 — The chorion is an extraembryonic membrane that develops in the early stages of pregnancy. It originates from the outer layer of the blastocyst, which is a structure formed during the initial stages of embryonic development. The chorion is vital for supporting the growing embryo and eventually gives rise to the placenta.
Chorion | Fetal Membrane, Placental Development & Maternal …
Chorion, in reptiles, birds, and mammals, the outermost membrane around the embryo. It develops from an outer fold on the surface of the yolk sac. In insects the chorion is the outer shell of the insect egg. In vertebrates, the chorion is covered …
Chorion - Definition and Examples - Biology Online Dictionary
2023年4月28日 — The chorion is a membrane that develops around the developing fertilized egg. It begins to develop during the early stages of pregnancy, particularly after the young embryo implants in the uterine lining (endometrium) and form the germ layers. The chorion’s main job is to protect and nourish the developing baby inside the mother’s womb.
Chorion - SpringerLink
2022年1月1日 — Chorion is the thin extraembryonic membrane that covers the embryos and other extraembryonic membranes of reptiles, birds, and mammals.