The word protein has been de­rived from a Greek work meaning "first". And indeed, proteins are the most es­sential builders of the body. All living cells contain protein. Your skin, muscles, hair, as well as your internal organs like brain, lungs, he...

Vitamins are organic compounds pres­ent in our usual diet, and are essential for a healthy and normal functioning of our bod­ies. Vitamins are present in very minute quantities in the food but this small amount is sufficient for the body's requirements. Vitamin...

The heart inside our body works like a pump sending blood to and form in the entire body. Just as water rushing through a hose exerts pressure on the hose, blood passing through the vessels in your body exerts pressure on the walls of these. It i...

Some people are sensitive to certain substances such as some particular food items, animal hair, plant pollen, chemicals, dust, or almost anything on earth. These may enter a person's body when one eats or in hales or touches them. When any of the substances don't "agr...

Blood is essential for the human body. The body of an average, healthy person has about six litres of blood moving inside it. Loss of too much blood can kill a person, although a healthy person can still live after loosing as much as one third of the body's blood. When a...

The human heart beats almost non-stop day and night. Each time the heart beats, it sends a pulsation through the arteries carrying blood. The alternate expansion and contraction of the heart produces a throbbing in the arteries of the body.

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We all need food, water and air to live. A major part of our body cells is made of water. If a person does not drink water required to keep the balance of water inside the body, the resul­tant dehydration may kill him.

There is more water than ...

Antibiot­ics are chemical substances which can destroy or stop the growth of certain germs in the human body. They are very important in the area of medicine because they are very effective anti infections drugs. They help the body to fight disease.

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The human eye is a sensitive camera which normally produces coloured pictures for us. But some­times this camera is unable to distin­guish between certain colours. And people who cannot see all the colours of the visual spectrum are called colour blin...

Newton, the great scientist, was the first one to show that what we call the white light, is actually a mixture of all the colours we see in the rainbow also.

When a beam of light passes through a glass prism, it separates all the colours, a...