Interesting Facts about Human Body

The human body have some interesting features and functions that one should notice. Here are some interesting facts :

• Babies are born without knee cap. They don't appear till they are 2-6 years of age.

• Children grow faster in the spring season.

• Our eyes are already the same size from birth, but our nose and ears never stop growing.

• The nose can remember 50,000 scents and odour.

• Our heart beats about 1,00,000 times per day.

• The heart produces enough pressure to squirt blood about 900cm.

• About 5-6 litres of blood is filtered by 2 million nephrons 37 times a day.

• Each square inch of human skin consists of 600cm of blood vessels.

• Most people shed 20kg of skin in a lifetime.

• The skin thickness varies from 1/2 to 6 mm, depending on the area of our body.

• We blink our eyes about 20,000 times a day.

• Each of our eyes has 120 M rods, which help us to see in black and white.

• Each eye has 6M cones, which help us to see in colour.

• An eyelash lives about 150 days before it falls.

• When you sneeze, air rushes through your nose at the rate of 156kmph. It's impossible to sneeze with open eyes.

• Our eyes have resolution of 576 megapixels.

• Women blink twice as much as men.

• The thyroid cartilage is also known as Adam's apple.

• If we place end to end our body's blood vessels, it would measure about 90,000 Kms.

• The length of the finger shows how fast the fingernail grows. The nail on the middle finger grows fastest. On an average, our toenails grow twice slow as our fingernails.

• A finger nail takes about 6 months to grow from base to tip.

• A pair of feet has 5,00,000 sweat glands.

• The energy used by human brain is enough to light a 25 watt bulb.

• Our brain sends messages at the rate of 375 kmph.

• The average human brain has about 100 billion nerve cells.

• It takes the interaction of 72 different muscles to produce human speech.

• One uses 14 muscles to smile and 43 to frown.

• The strongest muscle of the human body is masseter muscle located in jaw.

• The small intestine is about 750cm long.

• The large intestine is 150cm long and 3 times wider than the small intestine.

• The four taste zones on our tongue are salty (front sides), sweet (front), sour (back sides) and bitter (back).

• The stomach takes 20 minutes to tell the brain that it is full and one should stop eating.

• We get a new stomach lining every 3-4 days. If this did not happens, the strong acids in our stomach used to digest food would digest our stomach.

• The liver is the only major organ in the human body that can regenerate itself if parts of it is removed.

• The brain of women are 14% smaller than men but gives better results than men.

• The smallest bone in your body is in your ears.

• The heart circulates your blood through your body about 1,000 times each day.

• Babies are born with 300 bones whereas adult have 206.

• Human body have about 100 trillion cells and 600 muscles.

• Ever hour about 1 billion cells in the human body are replaced.

• Our body produces 1litres of saliva every day.

• An adult blood vessels could circle Earth's equator four times.

Much more facts are yet to be discovered by medical researchers and scientists.