The fingertips hold 2,000 pores per square inch.
• The skin weighs about six pounds, is the largest single organ of
the body and is only about 1/20th of an inch thick.
• The eyes receive approximately 90 per cent of all our
information, making us basically visual creatures.
• The eye blinks once every two-to-ten seconds, a bathing and
lubricating function. Once calculated, this causes our eyes to
be closed half an hour out of each day.
• Tears contain an antiseptic agent that aids in defense against
disease.
• The human being is, as far as we know, the only animal that
weeps as a result of emotional distress.
• The ears can discriminate some 1,600 different frequencies.
• The body takes in about a pint of air with each relaxed breath
which is around 14 per minute
• The bulk of lung tissue is composed of about 300 million
microscopic air sacs known as alveoli.
• Blood journeys endlessly through 60,000 miles of blood vessels
out from the heart and back