MelissaA
Brenton
Shilpa Karhik
The Astounding Cellular Makeup of the Human Body!!!
February 27th 2009 10:33
10% of your bodyweight consists of bacteria.
If you laid out all of your blood vessels from end to end, it would create a line that stretches out to 161,000 km (100,000 miles), or the distance around the equator 4 times.
The largest cell in the human body is the female egg and the smallest is the male sperm. It takes about 175,000 sperm cells to weigh as much as a single egg cell.
7-8% of your bodyweight is made up of blood, in the average human it is estimated to be about 5 litres.
The blood of an adult contains approximately 25 trillion cells.
A single drop of blood contains more than a staggering 250 million cells!
Only 40-50% of blood is composed of red blood cells.
Red blood cells have a limited life of approximately 120 days in which they will travel 480 km (300 miles) around your body.
It takes just 60 seconds for a blood cell to complete a whole circuit of the human body.
It also means that every second 3 million blood cells die while simultaneously 3 million more are created.
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