Page 142 - The Miraculous Machine that Works for an Entire Lifetime: Enzyme
P. 142

Harun Yahya







                   The Perfect Enzyme Chain in Blood Clotting
                   The blood-clotting system is an extraordinary phenomenon that
               operates so flawlessly that when you cut yourself, you can be sure that
               the flow of blood will soon stop and the injury will seal itself up. That
               certainty stems from the way the enzymes in your body work in a flaw-
               less, systematic manner.
                   A wound sends the entire body into alarm. The intervention will

               take place at the site of the cut. When bleeding starts anywhere in the
               body, all available means are mobilized and flow in the direction of the
               injury. At this point, certain molecules traveling through the blood-
               stream suddenly become active, at enormous speed.
                   First aid is delivered by blood platelets known as thrombocytes.
               These travel dispersed throughout the bloodstream, so that wherever
               bleeding may occur, a thrombocyte will always be patrolling nearby.
                   A protein known as von Willebrand factor works like a policeman
               calling for backup assistance by indicating the site of an accident. It
               halts thrombocytes when it detects them and ensures that they remain
               at the site. The first thrombocyte to arrive signals others by releasing a
               special substance, just as if it were summoning assistance over the ra-
               dio.
                   Once the first intervention has occurred, enzymes take over the
               work. Up to this point, in fact, a large number of enzymes have already

               become involved, but we shall concentrate on those that complete the
               coagulation process. The body always stores inactive enzymes for later
               use, coding them to go into action only when they receive the signal
               that their presence is required.
                   Fibrinogen is a non-active enzyme that travels freely through the
               body and is found dissolved in blood plasma. It circulates at random
               until the body suffers a cut anywhere, and then it suddenly goes into
               action. This protein that serves no function in the plasma heads to-
               wards the region of the injury. When a state of alarm develops, anoth-





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