Curious Human Body Facts

The human body is a very complicated system consisting of millions of cells organised uniquely and functioning dynamically together. The complexities can be better understood when it is highlighted. Anatomists find it useful to divide the human body into eight systems: the skeleton, the muscles, the circulatory and respiratory systems, the digestive system, the urinary system, the glandular system, the nervous system, and the skin.

Interesting Facts

• The thickness of the skin varies from 1/2 to 6 mm, depending on the area of our body.
• The four taste zones on our tongue are bitter(back), sour(back sides), salty(front side,) and sweet(font).
• One uses 14 muscles to smile and 43 to frown.
• The strongest muscle of the body is the masseter muscle, which is located in jaw.
• The small intestine is 5 feet long and 3 times wider than the small intestine.
• Most people shed 40 pounds of skin in a lifetime.
• When we sneeze, air rushes through our nose at the rate of 100 mph.
• An eye lash lives about 150 days before it falls out.
• Our brain sends messages at the rate of 240 mph.
• About 400 gallons of blood flow though our kidneys in one day.
• Each of our eyes has 120 M rods, which help us see in black and while.
• Each eye has 6 M cons, which help us see in color.
• We blink our eyes about 20,000 times a day.
• Our heart beats about 100,000 times a day. 
• Placed end-to-end all our body's blood vessels would measure about 62,000 miles.
• The average human brain has about 100 billion nerve cells.
• The thyroid cartilage is more commonly known as the Adam's apple.
• It's impossible to sneeze with our eyes open.
• It takes the interaction of 72 different muscles to produce human speech.
• When we sneeze, all our bodily functional stop even our heart.
• Babies are born without kneecap. They don't appear till they are 2-6 years of age.
• Children grow faster in the spring season.
• Women blink twice as much as men.
• If one goes blind in one eye, that person only loses about 1/5 of vision but all of the sense of depth.
• Our eyes are always the same size form birth, but our nose and ears never stop growing.
• The length of the finger dictates how fast the fingernail grows. The nail on the middle finger grows faster and on an average our toenails grow twice as slow as our fingernails.
• Hair is made of the same substance as fingernails.
• The nose can remember 50,000 scents.
• Similar to finger prints, everybody's tongue has a unique tongue print.
• A finger nails takes about 6 months to grow form base to tip.
• The energy used by the brain is enough to light a 25 watt bulb.
• The heart produces enough pressure to squirt blood 30 feet.
• We get a new stomach lining every 3-4 days. If we didn't, the strong acids our stomach uses to digest food would also digest our stomach.