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Answer to Question #63645 in Zoology for Sanjukta Ghosh

Question #63645
I was reading Developmental biology of chick, the formation of yolk sac and stumbled upon the presence of two vitelline arteries along with vitelline veins. The function of vitelline veins is to transport the digested yolk sac material to the growing embryo but what's the role of its arterial counter part?

The yolk doesn't need oxygen, they are not living tissues. Could it be the yolk sac cells that the arteries are providing O2 to?
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