Tag Archives: Heart

What Can Go Wrong With The Heart

A healthy heart gives the body a good blood supply so that all parts get enough food and oxygen. However, several things can go wrong with the heart. For example, a few people are born with a faulty heart. Many more people start their lives with a healthy heart, but later it becomes diseased. Some […]

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What’s Cardiac Arrest

All parts of the body need a continuous supply of blood. For example, if the blood supply to the brain stops for longer than three minutes it becomes damaged. Other parts of the body can go without a blood supply for longer without being damaged. However, the muscular walls of the heart itself are quickly […]

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Blood Circulation: from Greeks to Harvey

Two thousand years ago, the Greeks thought that blood moved backwards and forwards in the blood vessels rather like waves on a beach. They also believed that blood was gradually used up by the body, and that new blood was made from food, water and air. In 1628, William Harvey, an English doctor who worked […]

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Blood as transport system

You have probably seen blood in a film or filmstrip about blood, or even some fresh blood. But have you ever seen some preserved blood on a microscope slide? Blood is a liquid with some small solid objects in it. The red blood cells carry oxygen. The white blood cells help the body to fight […]

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Some heart exercises

Here are some exercises for your heart to figure out how fit you are. Use a box, chair or stool which is about 40-50 cm high for the physical exercise. Carry out the exercise like this. First, step up onto the box and stand on it with both legs straight. Then step down and stand […]

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Your heart is the best pump

We shall start with a couple of questions. Why do we have a heart? What does it do? What’s the pulse? There are blood vessels all over the body. Some are easy to see, because they are close to the skin surface. Most blood vessels cannot be seen because they are buried deep among the […]

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