Report Abuse. Almost every bone in your body is made of the same materials: The outer surface of bone is called the periosteum (say: pare-ee-os-tee-um). It's a thin, dense membrane that contains nerves and blood vessels that nourish the bone. The next layer is made up of compact bone.This part is smooth and very hard.eport Abuse. Almost every bone in your body is made of the same materials: The outer surface of bone is called the periosteum (say: pare-ee-os-tee-um). It's a thin, dense membrane that contains nerves and blood vessels that nourish the bone. The next layer is made up of compact bone. This part is smooth and very hard.
Bread flour is high in gluten protein, with 12.5-14% protein compared to 10-12% protein in all-purpose flour. The increased protein binds to the flour to entrap carbon dioxide released by the yeast fermentation process, resulting in a stronger rise. Bread flour may be made with a hard spring wheat.
The harder the wheat, the higher the protein content in the flour. Soft, low protein wheats are used for cakes, pastries, cookies, crackers and Oriental noodles, while hard, high protein wheats make excellent breads and quick breads. Durum is used in pasta and egg noodles.