some amazing facts of Human brain

• % brain of total body weight (150 pound human) = 2%

• Average brain width = 140 mm

• Average brain length = 167 mm

• Average brain height = 93 mm

• Average number of neurons in the brain = 100 billion

• % of cerebral oxygen consumption by white matter = 6%

• % of cerebral oxygen consumption by gray matter = 94%

• Time until unconsciousness after loss of blood supply to brain = 8-10 sec

• Time until reflex loss after loss of blood supply to brain = 40-110 sec

•  Rate of neuron growth (early pregnancy) = 250,000 neurons/minute