parts of an egg

• Air cell in an egg holds oxygen for the chick to breathe.
• Shell in an egg is the protective layer of the egg, with more than 7,000 tiny pores that allow oxygen to pass into the egg and carbon dioxide to escape.
• Shell in an egg is bumpy and grainy in texture and is made up entirely of calcium carbonate.
• Shell in an egg has a thin outermost coating called bloom or cuticle that keeps bacteria or dusts off.
• Membrane in an egg, both inner and outer, keeps bacteria from entering the egg and helps to slow evaporation of moisture from the egg.
• Membrane in an egg is a clear film lining the eggshell that is visible when one peels a boiled egg and is partly made up of keratin.
• Vitelline membrane is the clear casing that encloses the yolk in an egg.
• Albumen, also known as egg white, is the clear liquid contained within the egg, cushioning the egg yolk floating within it and is the main source of protein and water for the embryo.
• Albumen in an egg comes from the latin word “Albus” which means white and contains approximately 40 different proteins.
• Yolk in an egg provides food for the embryo and is made up of fats, carbohydrates, proteins, vitamins and minerals, and contains lecithin, an effective emulsifier.
• Chalaza or chalazae are cords on two sides of the yolk that keep the yolk floating in the center of the albumen and are opaque ropes of egg white.
• Germinal Disc is the white spot on the yolk and it is where the female’s genetic material is found.