How Much Blood Is In Our Body?

Blood

In an adult human body, there are about 5.5 liters of blood. These liters form the most amazing transportation system imaginable. The blood circulates through the body so that it reaches every one of the billions of cells that make up the body tissues. It brings food and oxygen to each cell,  carries away waste … Read more

How Is Diphtheria Controlled?

Diphtheria

Diphtheria is a serious disease. It is caused by bacteria, and illness starts a few days after the bacteria enter the body. The bacteria usually enter the body through the mouth and nose and infect the throat first. Usually, there is a sore throat, fever, and a   feeling of being unwell. A grey or pale membrane appears … Read more

How Does The Heart Work?

Heart

The admit human heart is about the size of a clenched fist. Yet it generates enough energy in 24 hours to lift 68,0£O kilograms, or the weight of a locomotive, 30 centimeters off the ground. It pumps about 16,360 liters of blood in 24 hours. This amazing organ,  which only weighs 225 to 340 grams, … Read more