Tell me something cool, a trick or a fact I probably don't know about the human body?

Answer 1

Here are a couple:

1. A woman has approximately 4.5 litres of blood in her body, while men have 5.6 litres.

2. By donating just one pint of blood, four lives can be saved.

3. Two million red blood cells die every second.

4. All babies are colour blind when they are born.

5. The cornea is the only living tissue in the human body that does not contain any blood vessels.

6. The eye of a human can distinguish 500 shades of the gray.

7. It is not possible to tickle yourself. The cerebellum, a part of the brain, warns the rest of the brain that you are about to tickle yourself. Since your brain knows this, it ignores the resulting sensation.

8. The human brain has about 100,000,000,000 (100 billion) neurons.

9. A lifespan of an eyelash is approximately 150 days.

10. Humans have about the same number of hair follicles as a chimpanzee has.

11. During a typical human life span, the human heart will beat approximately 2.5 billion times.

12. Most heart attacks occur between the hours of 8 and 9 am.

13. The human heart can create enough pressure that it could squirt blood at a distance of thirty feet.

14. An average women has 17 square feet of skin. When a women is in her ninth month of pregnancy she has 18.5 square feet of skin.

15. In one day, a human sheds 10 billion skin flakes. This amounts to approximately two kilograms in a year.

Answer 2

If you live to be 85, you will inadvertantly swallow 8 live spiders in your sleep.

Dolphins and Humans are the only mammals that have sex for pleasure.

After death, hair and nails continue to grow for up to 5 years. This is caused by bacteria in the nail bed, and hair folicle stimulating cell development. This, as well as other key factors, led to the rise of the Vampire Undead myths.

The human neck has exactly the same number of bones as that of the giraffe.

Humans share DNA with pigs, and are the only two mammals to get sunburn.

Men have nipples because all foetus are female until a certain point in development.

People yawn as the brain makes its last attempt at waking itself up. The resultant large gasp of oxygen is sent to the brain where it stimulates activity.

We only use 5% of our brain.

Records exist of people waking up from a coma and speaking a totally different language to their native tongue.

Answer 3

If you live long enough, and are healthy, you might grow a third set of teeth.

Humans are the most flexible when they are babies. We all lose that as we age. How many ninety year olds can you think of who can nibble on their own toes? Come to think of it, how many would want to?? hehehehe

I read the arm trick in another question, but an alternate method is to stand sideways to a wall and press your arm into it for a minute or so... then step away from the wall. It's fun... and you can try it all by yourself so no one will think you're going nuts. :)

Your lungs will regenerate in seven years. Good news for anyone quitting smoking.

Answer 4

Hypertrychosis commonly known as the werewolf disease is actually a not so unpleasent excessive hair growth. The vampire disease known as Porphyria makes people sesitive to light and some have a thrist for blood to restore the red pigment that their own doesn't supply.

look up Poriphyria and Hypertrichosis and you'll see alot of ancient lore about werewolves and vampires.

Answer 5

Step 1.

Take a wooden chair, preferably one with arms, and place the back of the chair flat against a wall.

Step 2

Face the wall, stand in front of the chair, and place both of your hands on the arms of the chair. Bending at the waist and keeing your legs straight, place the top of your head flat against the wall, over the chair.

Step 3

Bend your arms and lift the chair up off of the floor and at the same time straighten your back, while holding onto the chair and stand straight up.

Girls can do this, boys can't.

Answer 6

The human adult skeleton contains 206 bones, the skeleton of an infant contains 350 (the bones fuse (join) together as you grow). And more than half of your 206 bones are found in your hands and feet.

How is that for a fact.

Answer 7

Trick 1:

Sit in a chair. First, hold out your left leg and draw big circles in a clock-wise direction with your foot pointed. Stop. Now draw a big 'S' in the air with your left arm. Now try to do the two things at once...

Trick 2:

Stand upright. Get someone to hold your arms flat against the side of your body whilst you try to raise them up. They should hold them flat for about 20 seconds, with you trying really hard to raise them. Then, get them to release your arms, and see what happens....

Answer 8

you probably know more than me so there isn't any point of telling you a trick about the human body.

Answer 9

There is no proper name in English for 'the back of the knee'
The proper name for the groove that runs from your nose to your top lip is called a philtrum
Being able to roll ones tongue is a genetically inherited trait and cannot be taught

Answer 10

Long nails can be harbingers for bacteria, specifically if they are artificial, but they will are good for scratching and starting those little foil wrapped containers that will are so hard to get in to.