Allantois in Human
Allantosis plays a major role in Humans, particularly in the embryonic development process. Allantosis creates the urinary bladder and also contributes to the development of the umbilical cord. During the time of early embryogenesis, the allantois become an outgrowth and form the hindgut. It extends as the connecting stalk which becomes later the umbilical cord. The development process undergoes a series of transformations as mentioned below.
- Urinary Bladder Formation: The endodermal lining of the allantosis gives rise to the urinary bladder. As the urinary system develops, the allantosis incorporates with bladder and completes the structure.
- Umbilical Cord Development: The vascular core of the allantosis is known as the stalk that becomes surrounded by so many tissues and blood vessels. They connect the developing fetus to the placenta. It allows the process of exchange of different essential gases and nutrients in the fetus.
Allantois
Alantois is a fetal membrane that helps to form the umbilical cord. Alantois function in the gas exchange process and also collect the waste materials in the embryo. It is a membranous sac-like structure that originates from the yolk sac of different species like mammals, reptiles, and birds. Alantois are generally present in all embryos and located between the amnion and chorion as an extra-embryonic tissue. Alantois in humans ultimately regresses into a small structure within the umbilical cord. This structure is not found among vertebrates, amphibians, and non-tetrapods. In this article, we are going to discuss the alantois in detail.
Table of Content
- Allantois
- Functions of Allantois
- Different Parts Of Allantois
- Allantois and Chorion
- Allantosis in Human
- Fate of Allantosis
- Conclusion – Allantois
- FAQs – Allantois