UAMS Department of Neurobiology and Developmental Sciences - Nerves of the Back. Some of the material presented in these tables is contained in the book: MedCharts Anatomy by Thomas R. Gest and Jaye Schlesinger. Published by ILOC, Inc., New York. Copyright  1995.
Calories in egg yolk vs egg white. Most of the calories in eggs, as well as all of the fat content, is in the yolk. The yolk from a large egg contains about 55 calories and just over 180 mg of cholesterol. An egg white contains 17 calories and no fat content at all.
According to Self magazine, the calories in an egg depends upon its size. A large egg has 71 calories, while an extra large egg has 80 calories. Jumbo eggs contain 90 calories. Small eggs are typically 54 calories each, and medium-sized eggs contain 63 calories.