Thursday, July 5, 2012

30+ New and interesting facts about Skin

Facts about Skin:

  • The skin is the largest organ in the body and weighs 12 – 15% of the total body weight.
  • There are 2 different types of skin:
    • •Glaborous skin which is non-hairy (i.e. soles of feet and palms of hands)
    • •Hairy skin
  • The average human being has 21 sq ft of skin and about 300 million skin cells.
  • The skin is constantly renewing itself from the bottom up and takes 52 – 77 days to shed cells.
  • Humans shed about 600,000 particles of skin every hour – about 1.5 pounds a year. By 70 years of age, an average person will have lost 105 pounds of skin. Wow!
  • Each half square inch of skin has approx 10 hairs, 15 sebaceous glands, 100 sweat glands, 3.2 feet of tiny blood vessels.
  • There are 45 miles of nerves in the skin of a human being. That is longer than my commute to work!
  • Seventy percent of the dust in your home consists of shed human skin. Those dust bunnies are not cute.
  • Goose bumps are actually little pimples that help retain a layer of warm air over our body.
  • Big, big, crazy fact: globally, dead skin accounts for about a billion tons of dust in the atmosphere. Wow!
  • As you can see, our skin plays a huge part in our overall health. Our skin works overtime to keep us healthy, thank your skin by giving yourself a big hug and giving it the nutrients it needs to take even better care of you
  • It's your body's largest organ, despite what the readers of Maxim think.
  • An average adult's skin spans 21 square feet, weighs nine pounds, and contains more than 11 miles of blood vessels.
  • The skin releases as much as three gallons of sweat a day in hot weather. The areas that don't sweat are the nail bed, the margins of the lips, the tip of the penis, and the eardrums.
  • Ooh, that smell: Body odour comes from a second kind of sweat—a fatty secretion produced by the apocrine sweat glands, found mostly around the armpits, genitals, and anus.
  • Yum! The odour is caused by bacteria on the skin eating and digesting those fatty compounds.
  • Breasts are a modified form of the apocrine sweat gland.
  • Fetuses don't develop fingerprints until three months' gestation.
  • Without a trace: Some people never develop fingerprints at all. Two rare genetic defects, known as Naegeli syndrome and dermatopathia pigmentosa reticularis, can leave carriers without any identifying ridges on their skin.
  • Fingerprints increase friction and help grip objects. New World monkeys have similar prints on the undersides of their tails, the better to grasp as they swing from branch to branch.
  • Blowing' in the wind: Globally, dead skin accounts for about a billion tons of dust in the atmosphere. Your skin sheds 50,000 cells every minute.
  • There are at least five types of receptors in the skin that respond to pain and to touch.
  • One experiment revealed that Meissner corpuscles—touch receptors that are concentrated in the fingertips and palms, lips and tongue, nipples, penis and clitoris—respond to a pressure of just 20 milligrams, the weight of a fly.
  • In blind people, the brain's visual cortex is rewired to respond to stimuli received through touch and hearing, so they literally "see" the world by touch and sound.
  • "In the buff" became synonymous for "nude" in 17th-century England. The term derives from soldiers' leather tunics, or "buffs," whose light brown colour apparently resembled an Anglo-Saxon backside.
  • White skin appeared just 20,000 to 50,000 years ago, as dark-skinned humans migrated to colder climes and lost much of their melanin pigment.
  • I see very, very white people: Albinos are often cast as movie villains, as seen in The Da Vinci Code, Die Another Day, The Matrix Reloaded, and—inexplicably—the 2001 flick Josie and the Pussycats. Robert Lima of Penn State suggests that people associate pale-skinned albinos with vampires and other mythical creatures of the night.
  • More than 2,000 people have radio frequency identification chips, or RFID tags, inserted under their skin. The tags can provide access to medical information, log on to computers, or unlock car doors.
  • Flesh for fantasy: At the Baja Beach club in Barcelona, customers can get an implanted RFID "debit card" and party until their funds are exhausted.
  • The Cleveland Public Library, Harvard Law School, and Brown University all have books clad in skin stripped from executed criminals or from the poor.
  • Hopefully, they didn't have to reprint it: One such volume is Andreas Vesalius's pioneering 16th-century work of anatomy, De Humani Corporis Fabrica (On the Fabric of the Human Body).
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