The human body is the structure
of a human being. It is composed of many different types of cells that together
create tissues and subsequently organ systems. They ensure homeostasis and the
viability of the human body (Source: Wikipedia). We can say that Human body is
very mysterious because there are so many things related to human body which
are still unknown for science. So how much we know about our body?
Here are some interesting facts about human
body:

1) A new-born child can breathe
and swallow at the same time for up to seven months.

2) Your skull is made up of 29
different bones.
3) Blood makes up about 8 percent
of your total body weight.

4) The human heart pumps 182
million litres of blood during the average lifetime.
5) People with blue eyes are more
sensitive to pain than others.

6) Nerve impulses in the human
body move at about 90 m/s.
7) The strongest muscle in the
human body is the tongue.
8) The human heart is
approximately equal in size to that of a person's fist. An adult’s heart
weights 220-260 grams.

9) At birth, a child's body is
made up of around 300 bones. But an adult has just 206.
10) Each of us has around 2,000
taste buds.
11) The human eye can distinguish
10 million different colours.
12) Children grow faster in the
spring.
13) You can lose 150 calories per
hour if you hit your head against the wall.
14) Human skin is completely
replaced about 1,000 times during a person's lifetime.
15) Fingernails grow about four
times faster than your toenails.

16) The surface area of the human
lungs is approximately equal to the area of a tennis court.
17) An adult person performs
around 23,000 inhalations and exhalations a day.
18) There are about 40,000
bacteria in the human mouth.

19) A person burns more calories
when they are asleep than when they watch TV.
20) Every year more than 2
million left-handed people die because of mistakes they make when using
machines designed for right-handed people.
21) A person uses 17 muscles when
they smile, and 43 when they frown.
22) One percent of people can see
infra-red light and 1% can see ultra violet radiation.
23) Our eyes remain the same size
as they were at birth, but our nose and ears never stop growing.
24) Bones are about 5 times
stronger than steel.

25) During a person's lifetime,
the small intestine is about 2.5 meters. After they die, the muscles in the
walls of their intestine relax, and it’s length increases to 6 meters.
26) On average, a person says
4,800 words in 24 hours.
27) Our eyes remain the same size
as they were at birth, but our nose and ears never stop growing.
28) In the morning, a person is
about 8 millimetres taller than in the evening.
29) The facial hair of a
blonde-haired man grows faster than that of a man with dark hair.
30) Human lips are hundreds of
times more sensitive than the tips of a person's fingers.
31) The human heart pumps blood
at such pressure that it would be able to raise blood up to the fourth floor of
a building.
32) The only part of the body
that has no blood supply is the cornea of the eye. It receives oxygen directly
from the air.
33) At least 700 enzymes are
active in the human body.
34) Scientists aren't exactly
sure why we yawn, but it may help regulate body temperature.

35) The human
nose can detect about 1 trillion smells.
36) Skin is the body’s largest
organ and can comprise 15 percent of a person’s total weight.
37) Blushing is caused by a rush
of adrenaline.
38) Your tongue is made up of
eight interwoven muscles, similar in structure to an elephant’s trunk or an
octopus’s tentacle.
39) A single human brain
generates more electrical impulses in a day than all the telephones of the
world combined.

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