advt
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.
Human Body: Interesting Facts
Children grow faster in spring season.
One uses 14 muscles to smile and 43 to frown.
An eye lash lives about 150 days before it falls out.
Nails are made up of a protein called keratin which also makes up the hair.
The strongest muscle of the body is the masseter muscle, which is located in jaw.
Our brain sends messages at the rate of 240 mph.
Fingernails grow fourtimes faster than toenails.
It is impossible to sneeze with your eyes open.
Women blink twice as much as men.
Babies are born without kneecap. They don't appear till they are 2-6 of age.
Nails grow faster in summer than in winter.
The nose can smell 50,000 scents.
Each finger and toenail takes six months to grow from base to tip.
The hair and nails of men grow faster than those of women.
Right-handed people's nails grow faster in their right hands and Left-handed people's nails grow faster on their left hand.
The largest organ in the body is the skin.
Each kidney contains 1 million individual filters. They filter an average of around 1.3 liters of blood per minute, and expel up to 1.4 liters a day of urine.
In 30 minutes, the average body gives off enough heat to bring a half gallon of water to boil.
Human bone is as strong as granite in supporting weight. A block of bone the size of a matchbox can support 9 tonnes – that is four times as much as concrete can support.
The acid in your stomach is strong enough to dissolve razor blades.
The enamel in your teeth is the hardest substance in your body.
The thickness of the skin varies from 0.5 to 6 mm, depending on the area of your body.
The four taste zones on your tongue are bitter (back), sour (sides back), salty (sides front) and sweet (front).
The small intestine is about 25 feet long.
The large intestine is about 5 feet long and 3 times wider than the small intestine.
Most people shed 40 pounds of skin in a lifetime.
When you sneeze, air rushes through your nose at the rate of 100 mph.
About 400 gallons of blood flow through our kidneys in one day.
Each of our eyes has 120 M rods, which help us see in black and white.
Each eye has 6M 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 takes the interaction of 72 different muscles to produce human speech.
When you sneeze, all your bodily functions stop even your heart.
If one goes blind in one eye, thet person only loses about 1/5 of vision but all of the sense of depth.
Our eyes are always the same size from birth.
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 fastest.
Similar to finger prints, everybody's tongue has a unique tongue print.
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.
A full bladder is roughly the size of a soft ball.
There are about 65 muscles in our body.
A pair of feet has 50,000 sweat glands.
Each square inch of human skin consists of 20 feet of blood vessels.
Our ears can detect 1500 different tones.
An average person will take one billion steps in his life.