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ASSEMBLING AN EGG

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OVARY

OVIDUCT

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OVARY

Stigma

Ovulation

The ovary is where you find the yolks being developed. There are tiny cells with the genetic material of the female chicken and yolk material is transported from the liver to the cells. The yolk material is deposited in these cells making them grow and become easily seen. Once the yolk has reached the right size it is released from the ovary into the oviduct and the start of the assembly line for the creation of a complete egg.

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The release of a yolk is called ovulation.

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The yolk are released along the stigma or suture line which are the clear lines on the yolk with no blood vessels visible.

[click] Of course only one yolk is supposed to be released at one time. If the hen releases two yolks you end up with a double yolk egg.

The following old video shows you the release of a yolk from the ovary. The pencil mark shows you the stigma.

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INFUNDIBULUM

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MAGNUM

Albumen

INFUNDIBULUM

Fertilization

Chalaza

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ISTHMUS

Shell membranes

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SHELL GLAND

Shell

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MAGNUM

Albumen

INFUNDIBULUM

Fertilization

ISTHMUS

Shell membranes

SHELL GLAND

Shell

OVARY

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VAGINA

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THE INCREDIBLE EDIBLE EGG