Conclusion – Allantois

Allantois

Allantois is a tube-like structure of the yolk sac that helps to remove the nitrogenous waste materials from the embryo. It is also related to the development of the urinary bladder of an organism. It connects the bladder with the yolk sac during the time of fetal development....

Functions of Allantois

Allantois is a multifunctional structure that plays a major role during the embryonic development of different species like mammals, birds, and reptiles. Here are some functions of the allantois as mentioned below....

Different Parts of Allantois

The Allantois is divided into several parts or regions as mentioned below....

Allantois and Chorion

Allantois and Chorion both are crucial components of the extraembryonic membranes in vertebrate embryos. As we know allantois is a sac-like structure that develops as an outpouching of the embryonic gut and plays a major role in the process of embryonic development. The chorion is a part of the extraembryonic membrane that surrounds the embryo. It evolves from the outermost layer of the cells of the embryo. It forms the outermost membrane that covers the amniotic cavity....

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....

Fate of Allantois

In human embryonic development, the allantois goes through a process of regression. Initially, the allantois forms the urinary bladder and takes a tube-like structure. The lower part of the allantois merged with the bladder and the upper part of the allantois becomes the urachus. The vascular portion of allantois known as the allantoic stalk develops as the surrounding tissues and the blood vessels. The embryonic allantosis becomes the fetal urachus that connects the fetal bladder to the yolk sac. After birth, the urachus becomes obliterated as the median umbilical ligament....

Conclusion – Allantois

Allantois is a tube-like structure of the yolk sac that helps to remove the nitrogenous waste materials from the embryo. It is the mid-layer of the placenta and the blood vessels that originate from the umbilicus traverse. Allantois is a multifunctional structure that plays a major role during the embryonic development of different species like mammals, birds, and reptiles. The primary function of the allantois is waste management. It serves as the temporary storage organ that stores the waste materials produced by the embryo. Allantois also works as a respiratory exchange medium. It helps to maintain the fluid balance within the embryo. Allantois contributes to the overall development of the embryo also....

FAQs – Allantois

Is the Allantois the Umbilical Cord?...