Monday, March 9, 2009

Interesting science facts - Brain

Brain is center of the nervous system, located in head.

Brain is only 3 per cent of the body's weight, but uses almost 1/5 of total body energy (close to 20 %), mostly for maintenance function.

Human brain consists of approximately 100 billion neurons (responsive cells in the nervous system that process and transmit information by electrochemical signaling)

Average weight of brain by newly born is about 350-400g. Brain grows in size until the age of 18.

Unconsciousness is the result of brain not getting enough blood supply. It happens after 8-10 seconds without blood supply.

About 750ml of blood pumps through human brain every minute.

Brain is in average 140mm wide, 167mm long and 93mm high.

Weight of human brain is very small compared to elephants brain (6000g compared to 1400 g) but is lot bigger than a monkey's brain (95g).

Human brain is capable of having more ideas than the number of atoms in the known universe.

Brain has delicate nature which makes it vulnerable to numerous diseases and several types of damage.

Brain is basically divided into two sides. The left side of your brain controls the right side of your body while the right side of your brain controls the left side of your body.

Brains control human behavior either by activating muscles, or by causing secretion of chemicals such as hormones.

There are still lot of unanswered things about how the brain works despite significant progress in science.

Some animals like jellyfish and starfish have a decentralized nervous system without a brain.

Brain size does not proportionally increase with body size.

Brain stroke happens when disturbance in the blood supply causes developing loss of brain functions.

Brain tumor is an abnormal growth of cells, usually within the brain, that can be either malign or benign.

The left side of our brain is often considered as the rational side of the brain because it deals with such things as language, mathematical processes, and logical analysis.

The right side of our brain is often considered as the creative side of the brain, associated with abstract, non-verbal functions such as music, visual images, emotions.

Men have 4% more brain cells than women, and about 100 grams more of brain tissue.