1 The brain makes up about 2 percent of a human's body weight. 2  The cerebrum makes up 85 percent of the brain's weight. 3  It contains about 86 billion nerve cells (neurons), the gray matter.
Rooney Mara's Height is 5ft 3in (160 cm). American Actress best known for her portrayal of Lisbeth Salander in the US remake of The Girl with the Dragon Tattoo.
Christina Ricci's Weight. Christina Ricci stands 5 feet and 1 inches tall and weighs 97 pounds. Born in Santa Monica, California, Christina Ricci grew up in New Jersey and began her career in elementary school doing commercial work. She became more widely recognized for her debut film role as the younger daughter of Cher in the film, âMermaidsâ.