A small chicken egg actually has different parts, shell, yolk, vitelline membrane, air cell, chalazae, Albumen (white egg), Inner Membrane, and outer membrane. As shown in the anatomy of a chicken egg, each part of the egg serves a different purpose. Shell is the outer layer of the egg which is made up of Calcium Carbonate. The Inner & outer membrane are made partly of keratin and are found lying between the eggshell and egg white. Whereas, the air cell can be found between the inner and outer membranes of the egg’s largest end. Lastly, the yolk contains the most minerals and vitamins. It contains calcium, iron, phosphorus, thiamine, riboflavin, Vitamin A, and Vitamin D. Depending on the breed of the chicken, the yolk will vary in color from slightly yellow to deep orange.