the yock sac supplies nutrients
Ben Yock was born in 1975.
Lee Yock Suan was born in 1946.
its the ovary
Morris Yock
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The yolk sac is initially what gives the baby nutrients before the umbilical cord is formed
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The appendix.
The appendix.
The appendix.
There isn't an air sac in the lungs, They're alveolis that take in the air and expand to improve their surface area, causing your diaphragm to expand and shrink when you breathe, but the function is to allow you to respire.
To lower their body density, making it easier to fly.