Arteries carry blood away from the heart, and veins carry blood toward the heart. Capillaries connect the arteries to the veins throughout the body. Fun Fact: If all the blood vessels from a child's size body were lined up in a row, they would form a line more than 60,000 miles long.
Fats in Butter. Butter is about 80% fat, and the rest is mostly water. Basically, it is the fatty portion of milk that has been isolated from the protein and carbs. Butter is one of the most complex of all dietary fats, containing more than 400 different fatty acids. It is very high in saturated (about 70%) fatty acids, and contains a fair amount of monounsaturated fatty acids (about 25%).
A 2-tablespoon serving of peanut butter contains 16 grams of fat. Although it would seem that fat would make you fat, certain types are actually beneficial to your health and weight management. Approximately 81 percent of the fat in peanut butter is unsaturated, the type of fat that contributes to heart health.