Question

the brain needs a continuous supply of blood and oxygen .why?

Answer 1

Although the brain is only about 2% of the total body weight in humans, it receives 15-20% of the body's blood supply. Because brain cells will die if the supply of blood which carries oxygen is stopped, the brain has top priority for the blood. Even if other organs need blood, the body attempts to supply the brain with a constant flow of blood.

Answer 2

The brain needs a continuous supply of blood and oxygen .why?