Veterinary Embryology 8.5: In the ____ and ____ (type of animal), the yolk sac is unimportant as a fetal membrane and it undergoes early regression, especially after formation of the ____. In the ____ and ____, the yolk sac is more important as it forms part of the (temporary) initial ____; it therefore also persists for a much longer period.

Question

In the ____ and ____ (type of animal), the yolk sac is unimportant as a fetal membrane and it undergoes early regression, especially after formation of the ____. In the ____ and ____, the yolk sac is more important as it forms part of the (temporary) initial ____; it therefore also persists for a much longer period.

Magdalena Badenhorst · Accepted Answer

ruminants and pig
allantois
horse and carnivores
placenta

Veterinary Embryology 8.5

In the and (type of animal), the yolk sac is unimportant as a fetal membrane and it undergoes early regression, especially after formation of the . In the and , the yolk sac is more important as it forms part of the (temporary) initial ; it therefore also persists for a much longer period.

Ruminants and pig allantois horse and carnivores placenta

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