Page 213 - The Miracle of the Blood and Heart
P. 213

Blood Vessels: A Flawless
                                   Transportation Network




                                                        The aorta leaves the
                                                        heart and divides in
                                                        two: The upper branch
                                                        goes to the head and
                                             Aortic arc
                                                        arms, and the lower to
                                                        various subsidiary ves-
                                             Chest aorta  sels and organs. When
                                                        the body is at rest, the
                                                        oxygen is transported
                                                        to the tissues in less
                                                        than 10 seconds after
                                                        it is picked up from the
                                                        lungs. During exercise,
                                                        this period is reduced
                                                        to 2 to 3 seconds.



                    The special property mentioned above is extremely impor-
                 tant. Thanks to their elastic muscular structure, which is capa-
                 ble of expanding, the arteries have a storage function that
                 allows there always to be blood in the body. This elasticity in
                 the arteries is also important, since their flexibility prevents
                 the pressure from rising too high when blood is pumped
                 through the system. At the same time, elasticity permits a con-
                 stant flow of blood through the tissues by maintaining a high
                 arterial pressure between heartbeats. 105  God has created this
                 elasticity, which is necessary in many aspects in order to main-
                 tain the body's equilibrium.
                    The arteries lie generally deep within the body. In some
                 places, however—for example, in the wrist, the temples, neck,
                 the backs of the feet and ankles—they are much closer to
                 the surface. In these regions, the passage of blood as it
                 strikes the arterial wall under high pressure can be
                 felt under the skin with every heartbeat.
                                                                       Adnan
                                                                       Oktar



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