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.
The Barbadian beauty looks positively statuesque, and by most standards, she is. Rihanna stands 5 feet, 8 inches tall, and at that height, the singer is well above the U.S. female average of 5 feet, 3.8 inches tall.