Amazing Facts About the Human Body

Amazing Facts About the Human Body

A lot of very interesting facts about the human body you probably didn’t know .

Eyes

The purpose of eyebrows is to keep sweat from running into the eyes
The number one cause of blindness in America is diabetes
You blink over 6,000,000 times per year

Hair

The average man spends around 5 months of his life shaving
Hair is the second fastest growing tissue on the body. Bone marrow is the first.
Hair is made out of the same substance as fingernails

Brain

Around 20% of the oxygen you breathe goes to your brain
You cannot properly tickle yourself as your brain knows that you are touching yourself and will not react in the same way as if something foreign were touching you

Body

In one day, you shed about 10 billion skin flakes
A human salivates an average of 1-3 pints of saliva every day
An adult human body requires around 90 pounds of oxygen per day

Heart

The heart produces enough pressure that it can squirt blood at a distance of over 35 feet
The human heart beats an average of 35,000,000 times per year – thus, the average human heart beats around 100,000 times per day

Facts 1 – 5

More interesting facts about the human body ?

1. The stomach’s digestive acids are strong enough to dissolve zinc. Fortunately for us, the cells in the stomach lining renew so quickly that the acids don’t have time to dissolve it.

2. The lungs contain over 300,000 million capillaries (tiny blood vessels). If they were laid end to end, they would stretch 2400km (1500 miles).

3. A mans testicles manufacture 10 million new sperm cells each day – enough that he could repopulate the entire planet in only 6 months!

4. Human bone is as strong as granite in supporting weight. A block of bone the size of a matchbox can support 9 tonnes – that is four times as much as concrete can support.

5. Each finger and toenail takes six months to grow from base to tip.

Facts 6 – 10

6. The largest organ in the body is the skin. In an adult man it covers about 1.9m2 (20sq ft). The skin constantly flakes away – in a lifetime each person sheds around 18kg (40 lb) of skin.

7. When you sleep, you grow by about 8mm (0.3in). The next day you shrink back to your former height. The reason is that your cartilage discs are squeezed like sponges by the force of gravity when you stand or sit.

8. The average person in the West eats 50 tonnes of food and drinks 50,000 liters (11,000 gallons) of liquid during his life.

9. Each kidney contains 1 million individual filters. They filter an average of around 1.3 liters (2.2 pints) of blood per minute, and expel up to 1.4 liters (2.5 pints) a day of urine.

10. The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.

Facts 11 – 15

11. In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.

12. A single human blood cell takes only 60 seconds to make a complete circuit of the body.

13. A foreskin, the size of a postage stamp, from circumcised babies take only 21 days to grow skin that can cover three (3) basketball courts. Amazing isn’t it. Thanks to science. The laboratory-grown skin is used in treating burn patients.

14. The eyes receive approximately 90 percent of all our information, making us basically visual creatures.

15. The female ovaries contain nearly half-a-million egg cells, yet only 400 or so will ever get the opportunity to create a new life.

Even more:

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!