Physics of the Heart Essay -- physics heart

In the US, kindling attacks kill more plenty than any other single cause. Many of the deaths are caused by galvanic disturbances in a damaged heart that cause it to fibrillate (Pool). despite current overwhelming interest in the achievements of the human heart, for nigh of history the human heart has been regarded as a forbidden electronic organ too delicate to tamper with (NOVA). In fact, it might have remained so, were it non for World War II where military doctors, faced with massive be of injuries ushered the world into our current medical trajectory.Your body has about 5.6 liters of store. All of this pipeline circulates through the body three times every minute. In virtuoso day, the blood travels a total of 12,000 miles (NOVA). Rhythmic contractions of the heart pump blood occur in response to electrical control pulse dates. spry cells in the sinoatrial node in the heart trigger a sequence of electrical events that control muscle contractions, which pump the blood. Scientific interest in the heart goes back centuries. Some of the most basic understandings about the operation and specifically the electrical currents of the heart were discussed during the May 17, 1888 Proceedings of the Royal corporation of London by Professor J.A. McWilliam of the University of Aberdeen. The following conclusions were based on his studies of mammal hearts in cats, dogs, rabbits, rats, hedgehogs, and guinea-pigs. * An all or nothing approach to heart contraction o If a stimulus was strong enough to enkindle contraction, it produced a maximal contraction * The application of interrupted currents induces fibrillar contractions which can be recovered from even after long period under the unite influence of artificial respira... ...n that prevents the heart from immediately contracting again. Bibliography1. Cactus Picture demonstrate 16, 2005.2. Campbell, Neil A. (2002) Biology 6th edition. Benjamin Cummings. San Francisco, CA.3. Kay, Ian. (199 8) Introduction to Animal Physiology Springer-Verlag sweet York Inc.4. McWilliam, J.A. (1888) On the Rhythm of the Mammalian tenderheartedness Froceedings of the Royal Society of London, Vol. 44, pages 206-208.5. NOVA. Cut to the touchwood PBS Online 1997.6. Pool, Robert. (1990) Heart Like a Wheel Science, Vol. 247, No. 4948, pages 1294-1295.7. Putnam, Jeremiah L. Heart Diagram Professor of Biology. Davidson College.8. Schmidt-Nielsen, Knut. (1997) Animal Physiology Adaptation and environment Fifth Edition. Cambridge University Press. New York, NY.