What do you think?
Rate this book


224 pages, Paperback
First published January 1, 1980
Hovering, he considered his pulsing heart, atria and ventricles, relaxing in diastole, contracting fiercely in systole, the striated muscles of interdigitated acting and myosin filaments, the resting membrane potential at 84 millivolts. He observed the twin syncytiums, and the impulses surging across the A-V bundle. He waited for the depolarisation plateau, watched the calcium ions diffusing inward through the cardiac membrane , its permeability to potassium ions falling. The depleted tissues outside the membrane sucked hungrily at the calcium suspended in the enclosing extracellular fluids.