NEET BIOLOGY

Detailed explanation-1: -It is TRUE. Our 100 billion microscopic brain cells, called neurons, produce enough electrical signals to power a small light bulb.

Detailed explanation-2: -Your neurons create and send more messages than all the phones in the entire world. And while a single neuron generates only a tiny amount of electricity, all your neurons together can generate enough electricity to power a low-wattage bulb.

Detailed explanation-3: -But if we just look at the brain’s power consumption, we must conclude that the human brain is very “green.” The adult human brain runs continuously, whether awake or sleeping, on only about 12 watts of power. For comparison, a typical desktop computer draws around 175 watts, and a laptop somewhere around 60 watts.

Detailed explanation-4: -Remarkably, the brain alone consumes 20% of the body’s chemical energy, even though it accounts for only 2% of the body’s mass. Metaphorically speaking, we all have a 20 W light bulb burning in our head, even when we lie still in complete darkness doing physically nothing.

Detailed explanation-5: -The brain operates on the same amount of power as 10-watt light bulb. Your brain generates as much energy as a small light bulb even when you’re sleeping. As we get older, the brain loses almost one gram per year. Only four percent of the brains cells work and the remaining cells are kept in reserve.