More, interesting facts about the human body you probably didn’t know.
1: Tongue Print
Don’t stick out your tongue if you want to hide your
identity. Similar to fingerprints, everyone also has a unique tongue print!
2: Shedding
Your pet isn’t the only one in the house with a shedding
problem. Humans shed about 600,000 particles of skin every hour. That works out
to about 1.5 pounds each year, so the average person will lose around 105
pounds of skin by age 70.
3: Bone Count
An adult has fewer bones than a baby. We start off life with
350 bones, but because bones fuse together during growth, we end up with only
206 as adults.
4: New Stomach
Did you know that you get a new stomach lining every three
to four days? If you didn’t, the strong acids your stomach uses to digest food
would also digest your stomach.
5: Scent Remembering
Your nose is not as sensitive as a dog’s, but it can
remember 50,000 different scents.
6: Long Intestines
The small intestine is about four times as long as the
average adult is tall. If it weren’t looped back and forth upon itself, its
length of 18 to 23 feet wouldn’t fit into the abdominal cavity, making things
rather messy.
7: Bacteria
This will really make your skin crawl: Every square inch of
skin on the human body has about 32 million bacteria on it, but fortunately,
the vast majority of them are harmless.
8: Source of Body Odor
The source of smelly feet, like smelly armpits, is sweat.
And people sweat buckets from their feet. A pair of feet have 500,000 sweat
glands and can produce more than a pint of sweat a day.
9: Sneeze Speed
The air from a human sneeze can travel at speeds of 100
miles per hour or more — another good reason to cover your nose and mouth when
you sneeze — or duck when you hear one coming your way.
10: Blood Distance
Blood has a long road to travel: Laid end to end, there are
about 60,000 miles of blood vessels in the human body. And the hard-working
heart pumps about 2,000 gallons of blood through those vessels every day.
11: Saliva Quantity
You may not want to swim in your spit, but if you saved it
all up, you could. In a lifetime, the average person produces about 25,000
quarts of saliva — enough to fill two swimming pools!
12: Snore Loudness
By 60 years of age, 60-percent of men and 40-percent of
women will snore. But the sound of a snore can seem deafening. While snores
average around 60 decibels, the noise level of normal speech, they can reach
more than 80 decibels. Eighty decibels is as loud as the sound of a pneumatic
drill breaking up concrete. Noise levels over 85 decibels are considered
hazardous to the human ear.
13: Hair Color and Count
Blondes may or may not have more fun, but they definitely
have more hair. Hair color helps determine how dense the hair on your head is,
and blondes (only natural ones, of course), top the list. The average human
head has 100,000 hair follicles, each of which is capable of producing 20
individual hairs during a person’s lifetime. Blondes average 146,000 follicles.
People with black hair tend to have about 110,000 follicles, while those with
brown hair are right on target with 100,000 follicles. Redheads have the least
dense hair, averaging about 86,000 follicles.
14: Nail Growth
If you’re clipping your fingernails more often than your
toenails, that’s only natural. The nails that get the most exposure and are
used most frequently grow the fastest. Fingernails grow fastest on the hand
that you write with and on the longest fingers. On average, nails grow about
one-tenth of an inch each month.
15: Head Weight
No wonder babies have such a hard time holding up their
heads: The human head is one-quarter of our total length at birth but only
one-eighth of our total length by the time we reach adulthood.
16: Need for Sleep
If you say that you’re dying to get a good
night’s sleep, you could mean that literally. You can go without eating for
weeks without succumbing, but eleven days is tops for going without sleep.
After eleven days, you’ll be asleep — forever!
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