The human body consists of cells that organs are made of.
All of them together form one organism. The human body is made from many organs
which have different function, volume and position in the body.
Do you know what’s the biggest organ in your body? No, not
the lungs. Not even the brain. The biggest organ in the human body is the skin.
Skin is one of most important organ in our body. Without
skin, the water would evaporate of the body much faster.
Skin is made of many types of cells which have their own
function accordingly. A square inch of skin has 650 sweat glands, 20 blood
vessels, 60,000 melanocytes and more than 1,000 nerve endings on average. The
human skin is made of three layers: epidermis, dermis and hypodermis. Hair
grows in its base.
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The skin of average person weighs about 8 kilograms.
The skin isn’t there just for keeping us safe from
evaporating. Other functions of skin are:
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Protection. It is an anatomical shield that
protects us from pathogens and other dangers in the environment.
-
Sensation. It contains a variety of nerve
endings that react to heat and cold, touch, pressure and tissue injury.
-
Heat regulation. The skin has many blood vessels
which expand when the body temperature is high, thus releasing the heat from
the body. Also, the skin has sweat glands which controls the body temperature
through water evaporation. The heat is being released with the evaporated
water.
-
Excretion. Most of the glands are releasing
unhealthy compounds from the body, such as urea.
.
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Synthesis. Skin produce vitamin D by action from
UV and she is a storage of lipids and
water.
It is interesting to know that the color of the skin is
determined by the pigment called melatonin, that produces malanocytes and other
compounds such as carotene and hemoglobin (red color skin).
Finally, skin is an awesome organ because it’s able to
regenerate itself after injuries. Of course, bigger injuries could cause
greater damages and could be fatal.
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