Human Body: An Introduction

(The human body is at the edge of human comprehension with its microcosmic mysteries and its 100 trillion cells!)

The human body, both internally and externally, contains many fascinating factors about which all of us would do well to learn!


Just the genetic elements of life, the molecules of DNA, bend and twist one billion times every second!

It is estimated that if all of your body's tightly coiled DNA material in its trillions of cells could be unraveled, it would stretch from the earth to the sun and back 1,000 times!

The human brain, with its ten billion nerve cells packed more densely than any other tissue in the body, has the ability to record over 86 million bits of information each day of our lives. Memory, it has been estimated, can hold some 100 trillion bits of information in a lifetime.

The brain's electrical circuitry alone, discounting its extremely complex chemistry, is some 1,400 times more complex than today's global telephone network. Each and every second, your brain forms at least 100,000 different chemical reactions that in turn create thoughts, emotions, and actions.

Today's human body and high-tech medicine are without question the elements of information overload; however, although our senses provide a constant flow of information to the brain, ninety nine percent is said to be screened out as irrelevant.

From the Preface of The Body Almanac by Neil McAleer,
Doubleday & Comapany, Inc., Garden City, New York, 1985.