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Brain is one of the important parts for the man.
Brain is the most important organ of our body.
Brain indicates
the direction knowledge. Head protect the brain.
Brain works
The human brain is the most dedicate and the most complicated organ in the body. It is like a busy telephone switchboard; thousands of messages arrive, and go out every minute. Enormous number of impulses pours into the brain every second. The brain co-ordinates all the impulses it receives. It separates quickly what is most important for the moment from all the rest. The whole process takes only a tiny fraction of a second. For example, when we cross a road on a square, we see traffic signal, moving or standing vehicles and people of all sorts. When the brain wants us to cross road, it neglects all the other things except those helpful in crossing the road. Then it sends impulses to the muscles of the legs and trunk to move.
When an insect crawls on our neck, the nerves from the neck send a `something crawling’ message to the brain. If the brain thinks it should be removed with a hanky, it sends an impulse to you arm and hand to move to take the hanky and remove the insect.
The impulses travel at a speed of several hundred kilometers per hour. For example, your brain `sees’ a snake through your eyes. It gets impulses within a tiny fraction of a second. It decides and sends impulses to your feet with the same speed. That is how you run the moment you see a snake. Thus your five tell your brain about the world around you. The brain interprets the situation, takes decision and orders quickly.
The brain stores our experience and thus we `learn’. It recalls the things that we learned in the past and we remember. We have two types of memories. Long-term memory lasts for years. Short term memory lasts for a few minutes, hours or days. Here the brain keeps information that we need for a while. For example, when we go upstairs to the kitchen to get some milk, we don’t forget for purpose we went there.
Published: August 24, 2009
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