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Saturday 24 August 2013

40 Amazing Facts About The Human Body

 
The human body is an incredibly complex and intricate system and it still baffles researchers regularly despite thousands of years of medical knowledge. As a result, it shouldn't be a surprise that even body parts we deal with everyday have unexpected facts and explanations behind them.
Here are 100 wacky facts about the human body:
1. The brain is more active at night than during the day. Scientists don't know yet why this is.

2. The higher your IQ, the more you dream.

3. Facial hair grows faster than any other hair on the body.

4. The nail on the middle finger grows faster than the other fingernails.

5. Fingernails grow nearly four times faster than toe nails.

6. The lifespan of a human hair is 3 to 7 years on average.

7. The acid in your stomach is strong enough to dissolve zinc. It doesn't destroy the stomach because because the stomach walls constantly renews itself.

8. Women's hearts beat faster than men's.

9. Women blink twice as many times as men do.

10. Women are born better smellers than men and remain better smellers over life.

11. Men burn fat faster than women by a rate of about 50 calories a day.

12. Men get hiccups more often than women.

13. A man has approximately 6.8 litres of blood in the body while women have approximately 5 litres.

14. The largest cell in the body is the female egg and the smallest is the male sperm.

15. During your lifetime, you will produce enough saliva to fill two swimming pools.

16. Babies are always born with blue eyes. The melanin in their eyes needs time to be fully deposited or to be darkened by ultraviolet light to reveal the baby's true eye color.

17. Men have erections every hour to hour and a half during sleep. This is because the combination of blood circulation and testerone production can cause erections during sleep and are a necessary part of REM sleep.

18. After eating too much, your hearing is less sharp.

19. If your saliva cannot dissolve or mix with food, you will not be able to taste that food (try tasting something after drying off your tongue)

20. Noise causes the pupils of your eyes to dilate. Even very small noises can do this.
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Re: 40 Amazing Facts About The Human Body by fellis(f): 2:23am On Jan 29
21. Everyone has a unique smell, unique finger print and unique tongue print.

22. By age 60, most people will have lost half their taste buds.

23. Your eyes remain the same size after birth but your nose and ears never stop growing.

24. A simple, moderately severe sunburn burns the blood vessels extensively.

25. We are about 1cm taller in the mornings than in the evenings.

26. The strongest muscle in the body is the human tongue.

27. The hardest bone in the human body is the jaw bone.

28. The hands and feet contains almost half of the total bones in the human body.

29. About 32 million bacteria call every inch of your skin home, but they are mostly harmless and some of them are even helpful.

30. Humans shed and regrow outer skin every 27 days.

31. Three hundred million cells die in the human body every minute and everyday and adult produces 300 billion new cells.

32. The colder the room you sleep, the higher the chances are that you would get a nightmare.

33. Humans are the only species that produce emotional tears.

34. All babies are color blind at birth, they see only black and white.

35. The only part of your body that has no blood supply is the cornea in the eye. It gets its oxygen directly from air.

36. A normal human being can survive 20 days without eating but can survive only 2 days without drinking.

37. It is impossible to kill yourself by choking yourself with your hands.

38. Everybody has one strong eye and one weak eye.

39. Your skeleton keeps renewing itself every ten years which means that every ten years you get a new skeleton.

40. The human feet have 500,000 sweat glands and can produce more than a pint of sweat a day.
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cool facts

cool facts

  • Research suggests that Children tend to grow faster in spring season as compared to any other time of the year !
  • Hugging releases oxytocin,which helps to heal physical wounds,makes someone trust you more !
  • Do you know that your Toe-prints are also unique , just like your finger prints !And imagine even your tongue print is unique!
  • You know ,you have no sense of smell when you're sleeping!
  • You know ,you can see your nose all the time but somehow your brain always ignores it!
  • An average person has over 1,460 dreams a year which is about 4 dreams every night!
  • Do you know the similarity between human body and a banana? You will be amazed to know that 50% of human DNA is same as in banana!
  • The human body has enough iron in it to make 3 inches long nail.
Click & See free Human Body Systems - videos Science Cartoon Videos
  • A human heart pumps enough blood to fill 100 swimming pools in an average lifetime.In the same time it will beat almost three billion times
  • While sleeping, one person out of every eight snores, and one in ten grinds his teeth
  • All babies are color blind when they are born ,so they only see black & white.
  • People with dark color skin wrinkle later than the people having light color skins!
  • Guess how many muscles are working when you take a step! Well, about 200 muscles are used when we take a single step!
  • Weight of the eyeball ! The eyeball of a human weighs approximately 28 grams.
  • People generally read 25% slower from a computer screen compared to paper.
  • Do you know ,it is impossible to sneeze with your eyes open !
  • And do you know ,it is impossible to hum while your nose is plugged close !
  • Your brain is move active and thinks more at night than during the day.
  • Do you know what is Uvula? It is the small piece of the small tissue dangling over the tongue.
  • Now this is cool ,the tongue is the strongest muscle in the human body.
  • And did you know that our fingers don't have any muscles ? The muscles which move our finger joints are located in the palm and up in the forearm.
  • An adult human body contains approximately 100 trillion cells!
  • Your tongue has 3,000 taste buds.
  • Do you know ,your brain is 80% water?
  • No pain in the brain! Do you know our brain does not feel pain! Even though brain processes pain signals,the brain itself actually does not feel pain.
  • Bones in an adult account for 14% of the body's total weight.
  • The tips of your fingers have enough strength to support the weight of your whole body
  • When you are born with 300 bones in their body, but as an adult you only have 206 bones. This happens because many of them join together to make a single bone.
  • The outsides of a bone are hard, they are light and soft inside. They are about 75% water.
  • The strongest bone in your body is the femur (thighbone), and it's hollow!
  • The smallest bone in the human body is the stapes bone which is located in the ear,it is also called stirrup .
  • Men get hiccups more often than women.
  • A sneeze can exceed the speed of 100 miles per hour.When a sneeze leaves your body ,it is at such a high speed that you should avoid supressing it.
  • It takes food only seven seconds to go from the mouth to the stomach via the esophagus, pretty fast ! right?
  • Enamel is hardest substance in the human body.
  • Fingernails grow nearly 4 times faster than toenails!
  • Women hearts beat faster than men. Also women blink more than men !
  • In one day ,your heart beats 100,000 times.
  • The normal pulse is 70 heartbeats per minute.
  • Blood is such a good stain that Native Americans used it for paint.
  • Did you know that Blood is 6 times thicker than water?
  • Our kidneys filter about 1.3 liters of blood every minute & expel up to 1.4 liters of urine in a day.
  • The capacity of an adult human bladder ranges from approximately 600 ml to 800 ml. The exact maximum capacity varies from person to person. But remember that the urge to urinate is triggered when the bladder contains about 100 to 200 mls , much lower than full capacity. As the bladder fills with fluid, receptors in the bladder wall get stretched.
  • Do you know a woman has approximately 4.5 liters of blood in her body, while men have 5.6 liters?
  • Your blood takes a very long trip through your body. If you could stretch out all of a human's blood vessels, they would be about 60,000 miles long. That's enough to go around the world twice.
  • Did you know that, our heart (which is one of the main muscles ) is so powerful that it can squirt the blood no less than 9 meters high? It's because it’s programmed to deliver the blood even in the less accessible areas of the body, like the toes & the fingertips, and therefore, in order to do this, it’s necessary for the heart to create lots of pressure inside the veins.
  • People with darker skin will not wrinkle as fast as people with lighter skin.
  • The reason honey is so easy to digest is that it’s already been digested by a bee.
  • The only part of the body that has no blood supply is the cornea in the eye. It takes in oxygen directly from the air.
  • The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
  • Women blink nearly twice as much as men.
  • It takes about 20 seconds for a red blood cell to circle the whole body.
  • Every drop of blood in your body is filtered by your body over 300 times a day.
  • Babies are born with pink lungs but they darken in color as we breathe in polluted air.
  • Your right lung is bigger than left lung! The left lung is small so as to adjust heart in that part !
  • Human hair and fingernails continue to grow after death.
  • You burn more calorie while sleeping than watching TV.
  • Almost half of total bones in human body are in hands & feet.
  • The Hyoid bone, in your throat ,is the only bone in your body which not attached to other bone..
  • Your skeleton keeps changing every 10 years, that means your bodies keep renewing themselves so every 10 year you have a new skeleton.
  • The word Karate means, "empty hand”.
  • The best time for a person to buy shoes is in the afternoon. This is because the foot tends to swell a bit around this time.
  • Do you know left hand side of your brain controls right -side of your body whereas right-hand side controls left part of body .
  • Do you know everybody has a strong eye and one weak!
  • Pupils in eyes get their name because the picture they give is small ,like schoolchildren !
  • Rods & Cons are the two types of light sensitive cells in your eyes.Rods tell about brightness of color but Cones tell about what color it is. Cones don't work well in night ,that is why colors look gray at night!
  • The brain grows quickest till the age of 5.!
  • A normal human being can survive for 20 days without eating but it can survive only for 2 days without drinking!
  • Your blood carries food & oxygen to all of your body.!
  • Body fat is not particularly hazardous to health untill the level of total body fat reaches 35% for men & 40% for woman
  • About 90% of what we eat is assimilated in the small intestine.
  • Human Bones consist of 50% water & 50% solid material.
  • 14 bones make up the human face.
  • It is considered that average quantity of blood in a man is 6.8 litres wheas it is 500 ml less in an average woman

  • Hair is made of protein and keratin & has no blood supply.And common belief that shaving facial hair makes them grow faster or thicker is ,not true.
  • An average person has 100,000 hairs on his/her head. Each hair grows about 5 inches (12.7 cm) every year.
  • There are 60,000 miles (97,000 km) of blood vessels in each human.
  • The average adult can read 150 to 200 words per minute and the vocabulary of an average person consists of only 5,000 - 7,000 words.
  • The only part of the body that has no blood supply is the cornea in the eye.It takes in oxygen directly from air.
  • The human heart creates enough pressure while pumping to squirt blood to 30 feet.
  • An amazing fact :In an adult human body,there are about 60,000 miles of blood vessels .
  • Have you heard about 'Glabella' ! It is the space between your eyebrows!
  • Another interesting word 'Borborygmi' -it is the noise or sound which our stomach makes when we are hungry!
  • The only joint less bone in human body is Hyoid bone in the throat !
  • Another fact about blood :An average human adult has between 4.7 and 5 liters of blood in their body. Blood accounts for about 7% per cent of our total body weight!