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.
Not to be confused with Kate O'Mara. Kate Rooney Mara (/ËmÉÉrÉ/ MAIR-É; born February 27, 1983) is an American actress. She starred in the Netflix political drama House of Cards as Zoe Barnes and appeared in the Fox TV series 24 as computer analyst Shari Rothenberg. She made her film debut in 1999 with Random Hearts.