Page 141 - The Miracle of the Blood and Heart
P. 141
Blood: The Incomparable
Liquid of Life
When you cut yourself, the clotting elements in your blood go right to work.
Within 15 to 20 seconds, the coagulation process has already begun. The
duties of each element in this mechanism are of vital importance. It is impos-
sible to remove any one of them from the irreducibly complex sequence, or
blood clotting does not occur.
ever. The endothelial cells that make up the blood vessel walls
release a protein, known as von Willebrand factor (VWF), that
makes it easier for thrombocytes to adhere to the damaged
vein wall, and also ensures that they perceive the trouble spot
and do not pass by it. VWF first binds to the collagen in
the damaged region, and the adhering of thrombocytes
to the collagen also takes place in this way. It should
Adnan
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