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On This Day
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Did You Know?
Life Blood
Red blooded?
Blood is red because of haemoglobin, a chemical found inside the red ...
Varicose veins
Like your heart, many of your large veins have valves to stop blood ...
DID YOU KNOW?
A teaspoonful of blood contains about 25 million red blood cells, ...
Under pressure
Your heart pushes the blood along your blood vessels at high ...
Not my type
There are different types of blood. Doctors divide them into four ...
Red cell life cycle
You have about 30 million million red blood cells, more than any ...
Amazing artery
The aorta is the largest artery in the body. It is about 2.5cm (1in) ...
Amazing But True
There are about 96,000km (59,520 miles) of blood vessels (arteries, ...
Circulatory system
Blood flows from your heart along strong tubes, called arteries ...
What is in blood?
The main ingredients in blood are: 1. A watery fluid, called plasma. ...