Lecture 15 - Cardiovascular Physiology (cont.)
recorded by: Yale University
published: Jan. 4, 2011, recorded: March 2008, views: 3985
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
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Description
Professor Saltzman talks about electrical conductivity in the heart: that is, the generation and propagation of electrical potential in heart cells. He describes the role of ion channels and pumps in transporting sodium, potassium, and calcium ions to create action potential. This propagation of signal from the sinoatrial node through different tissues, which can be replaced by a pacemaker, eventually stimulates contraction of muscle fibers throughout the heart. Next, he describes the electrocardiograph and how each wave trace corresponds to the events caused by depolarization/repolarization of different heart tissues.
Reading assignment:
Biomedical Engineering: Bridging Medicine and Technology, in preparation by Mark Saltzman (forthcoming by Cambridge University Press); chapters 8 and 11
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