What Is An Egg
What is an Egg
An egg is the roundish reproductive body produced by the female of certain animals, as birds and most reptiles, consisting of an ovum and its envelope of albumen, jelly, membranes, egg case, or shell, according to species. Such a body produced by a domestic bird, esp. the hen. The contents of an egg or eggs: raw egg; fried eggs. Anything resembling a hens egg. Also called the female gamete; ovum.
Parts of an Egg
The Parts of the Egg
Because the body temperature of a hen is approximately 106?° F, eggs are very warm at the time they are laid. The temperature of the air is usually much lower than 106?° F, and the egg cools to the temperature of its surroundings. As cooling takes place, the contents of the egg contract more than does the shell of the egg. This creates a vacuum and air is drawn through the pores of the egg.
As a result, an air cell forms at the large end of the egg. While the embryo is growing, the shell membranes surround and contain the white or albumen of the egg. The albumen provides the liquid medium in which
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