A roast beef sandwich on white bread is a deli classic. Usually made with beef from the round, or hind leg, section of the cow -- roast beef is one of the leaner cuts of beef with fewer calories than fattier sections. Video of the Day
corpus callosum. a great band of deeply situated transverse white fibers uniting the two halves of the cerebrum in humans and other mammals.
Connections between the right and left halves of the brain are called Commissural Connections. The corpus callosum is the largest of the commissural connecting bundles. The axons in the corpus callosum are coated with myelin, a fatty substance that covers large axons and speeds up conduction of the impulses.