How does an egg develop? Detailed answer

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How does an egg develop? Detailed answer

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How does an egg develop?

What could be easier than an egg? But his birth is a rather complicated thing. In the belly of a bird, the egg yolk is first formed. It is formed inside a special organ called the ovary.

Once the yolk has formed, it moves into the oviduct. This is where the protein is made. Further, the egg, or rather part of it, moves to the lower end of the oviduct, where a leathery membrane and shell are formed. The egg is now ready to be laid. The shell is quite hard, but has pores. As the liquid content of the egg gradually evaporates through the pores, air enters to supply oxygen to the developing embryo.

The embryo is the part from which the body of the chicken will develop. Inside the shell is a leathery sheath that forms an airy rind at the blunt end of the egg.

It also contains a protein called albumin. It is a tasteless and odorless liquid, jelly-like in appearance, mostly consisting of water. White strands can be seen in the protein. Their purpose is to keep the yolk in the center of the egg, like in a hammock, and keep it from being hit. The yolk itself is round in shape: it is food for the embryo, which is located in a small cavity on its surface. The embryo of a fresh chicken egg is clearly visible if you carefully examine the yolk. And the germ in the eggs of other birds is so small that it is visible only under a microscope.

The size of the egg does not always depend on the size of the bird itself. It depends on the amount of food needed to feed the developing embryo until it hatches from the egg. Birds born blind and helpless hatch from small eggs that didn't have enough food to fully develop until they were born, when they could take care of themselves.

Author: Likum A.

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