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Title: General info about Human Body Post by: Vatsal on December 30, 2005, 02:08:07 PM General info about Human Body
o ? Our heart beats around 100,000 times every day. ? Our blood is on a 60,000-mile journey. o ? Our eyes can distinguish up to one million color surfaces and take in more information than the largest telescope known to man. o ? Our lungs inhale over two million liters of air every day, without even thinking. They are large enough to cover a tennis court. o ? Our hearing is so sensitive it can distinguish between hundreds of thousands of different sounds. o ? Our sense of touch is more refined than any device ever created. o ? Our brain is more complex than the most powerful computer and has over 100 billion nerve cells. o ? We give birth to 100 billion red cells every day. o ? When we touch something, we send a message to our brain at 124 mph. o ? We have over 600 muscles. o ? We exercise at least 30 muscles when we smile. o ? We are about 70 percent water. o ? We make one liter of saliva a day. o ? Our nose is our personal air-conditioning system: it warms cold air, cools hot air and filters impurities. o ? In one square inch of our hand we have nine feet of blood vessels, 600 pain sensors, 9000 nerve endings, 36 heat sensors and 75 pressure sensors. |