Question

Functions of Amnion, yolksac , chorion and allantois

Answer 1

Amnion :

The amnion protects the embryo in a sac filled with amniotic fluid.

Yolksac :

The yolk sac contains yolk — the sole source of food until hatching. Yolk is a mixture of proteins and lipoproteins.

Chorion :

The chorion lines the inner surface of the shell (which is permeable to gases) and participates in the exchange of O2 and CO2 between the embryo and the outside air.

Allantois :

The allantois stores metabolic wastes (chiefly uric acid) of the embryo and, as it grows larger, also participates in gas exchange.


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