Facts about the Brain
lWeighs approximately 3 pounds
¡Mostly water - 78%
¡Fat - 10%
¡Protein - 8%
lSoft enough to cut with a butter knife
lGrapefruit-sized organ
lOutside of the brain
¡Convolutions or folds
¡Wrinkles are part of the cerebral cortex
¡Folds allow maximum surface area
