Page 198 - The Miracle of the Blood and Heart
P. 198

THE MIRACLE OF THE
                                       BLOOD AND HEART


                   A cardiogram
                   indicating the
                   heart's electri-
                   cal activity. The
                   heart beats
                   rhythmically
                   and synchroni-
                   cally. Thanks to
                   this regular
                   rhythm the
                   body is provid-
                   ed with the
                   appropriate
                   amount of
                   blood flow.















                       The Heart Cells' Timing

                       The impeccable order in the timing of the heart is brought
                   about by coordination and communication among the cells
                   that comprise it. Here again, of course, a striking intelligence

                   manifests itself. These intelligent cells transmit current to the
                   other side of the heart at a speed of approximately 60 cen-
                   timeters (23.62 inches) a second. The signal is sent from the
                   sinus node. The cells comprising the sinus node produce the
                                  th
                     signal in 1/14 of a second.
                             As the current moves rapidly, it passes through the
                            two atria in turn and causes them to contract.

               Harun
               Yahya



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