منابع مشابه
The Different Mechanisms of Action Potential Propagation in the Heart
It was thought previously that cardiac muscle gap junctions provide low-resistance connections between cells and permit the local-circuit current to flow. Some evidences show that myocardial cells may not require low-resistance connections for successful propagation of the action potential (AP). It seems that some other types of mechanisms must be involved in AP propagation. In this article, we...
متن کاملThe Different Mechanisms of Action Potential Propagation in the Heart
It was thought previously that cardiac muscle gap junctions provide low-resistance connections between cells and permit the local-circuit current to flow. Some evidences show that myocardial cells may not require low-resistance connections for successful propagation of the action potential (AP). It seems that some other types of mechanisms must be involved in AP propagation. In this article, we...
متن کاملAction Potential
Glossary activation a term referring to the time-and voltage-dependent growth of a membrane conductance after membrane depolarization all-or-nothing a term that refers to the property that action potentials, if they occur, have a stereotyped shape that is largely independent of the size and form of the suprathreshold stimulus current clamp an experimental protocol in which transmembrane current...
متن کاملAction Potential
Almost all animal cells maintain a resting membrane potential of −70mV. For some cells, it is important for their function to rapidly vary their membrane potential. Such cells are known as excitable cells. Examples of excitable cells include neurons in the nervous system, muscle cells in the heart and skeletal muscle, sensory cells and endocrine cells. The rapid changes in membrane potential ta...
متن کاملCurves of Minimal Action over Metric Spaces
Given a metric space X, we consider a class of action functionals, generalizing those considered in [10] and [3], which measure the cost of joining two given points x0 and x1, by means of an absolutely continuous curve. In the case X is given by a space of probability measures, we can think of these action functionals as giving the cost of some congested/concentrated mass transfer problem. We f...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1975
ISSN: 0001-4966
DOI: 10.1121/1.2001813