Administrator Thu 29 Dec, 2016

The greatest machine you’ll ever own is your body. It’s more complicated than any computer, it lasts for a life time, and it’s yours for free.
Body parts
Your body is made up of hundreds of different parts. You probably know the names of the bits you can see, but there are many more hidden deep inside you.
Two of everything
Body parts often come in pairs. You have two feet, two eyes, two ears, two lungs, and so on. This means you have a handy spare in case one of them gets damaged.
Inside your body
Doctors can see inside your body with special cameras. X-ray cameras take pictures of hard body parts like bones. Other cameras, called scanners, can see soft body parts.
Water, water
Water is the most important chemical in your body. About two thirds of your weight is water.
The ingredients
Your body is made of just a few simple chemicals, plus water. Carbon is the chemical in diamonds and coal. A fifth of you is carbon.
Iron makes your blood red. You have enough to make one small iron nail.
Phosphorus is in the tips of matches, as well as your bones and teeth.
Sodium and chlorine make salt. Blood is one third as salty as sea water.
Potassium is used in some types of soap. It’s also in your body fluids
Nitrogen is important in muscles. It’s also the main ingredient in air.
Source: Human
Body Encyclopedia
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