Interesting Facts about Human Blood

1) A woman has approximately 4.5 litres of blood in her body, while men have 5.6 litres.

2) The kidneys filter over 1515 litres of blood every day.

3) If you could stretch out all of a human's blood vessels, they would be about 96,560 km. long. That's enough
to go around the world twice.

4) Blood accounts for about 7% of a human's body weight.

5) A newborn baby has about 0.23 litre of blood in his/her body.

6) Two million red blood cells die every second.

7) By donating just one pint (1.75 litres) of blood, four lives can be saves.

8) One unit of blood can be separated into several components: red blood cells, plasma, platelets and
cryoprecipitate.

9) Red blood cells carry oxygen to the body's organs and tissues.

10) Red blood cells live about 120 days in the circulatory system.

11) Platelets promote blood clotting and give those with leukemia and other cancers a chance to live.

12) Plasma is a pale yellow mixture of water, proteins and salts.

13) Plasma, which is 90 percent water, makes up 55 percent of blood volume.

14) Healthy bone marrow makes a constant supply of red cells, plasma and platelets.

15) There is no substitute for human blood.