Pacemaker

... for example, for the Netter atlas of anatomy and physiology http://www.netterimages.com/images/vpv/000/000/004/4584-0550x0475.jpg As for the pacemaker fibers of the heart, there is much more to be said. You need to understand that the SA node can maintain a steady rhythm of 80 beats/minute ...

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If there is deficiency in K+ outside the cell, aint the K+ in the cells going to rush out rapidly during repolarisation, causing the a even more negative membrane potential?and woluldnt this be causing a longer time for the cell to reach the threshold for the next action potential and hence leading ...

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Heart rate is regulated by the autonomic nervous system. The heart by itself, however, can beat without nervous stimulation because of the pacemaker. Stimulation just regulates whether it beats faster or slower. As for the blood pH, you can read a Class Note on Blood pH . Blood is basically ...

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... much time of work and insurance paying for test and no answer yet. to what it is. I am at my limits meantally HELP ME PLEASE. I did have a defib/pacemaker installed last august too which has been traumatic and I wonder if the nerves they cut in my chest may have anything to do with it..?

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the heart depends on cells to transmit their potential from one to another. If the pacemaker cells get damaged(could happen if depolarisation is induced in the refractary period) the impulse won't get from the sinoatrial node to the rest of the heart. The heart simply ...

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