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action current |
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current /cur·rent/ (kur´ent)
1. anything that flows. 2. electric c. action current the current generated in the cell membrane of a nerve or muscle by the action potential. alternating current a current which periodically flows in opposite directions. convection current a current caused by movement by convection of warmer fluid into an area of cooler fluid. direct current a current flowing in one direction only. electric current the stream of electricity that moves along a conductor. Symbol I . galvanic current a steady direct current, especially one produced chemically. current of injury a flow of current to (systolic c. of injury) or from (diastolic c. of injury) the injured region of an ischemic heart, due to regional alteration in transmembrane potential. pacemaker current the small net positive current flowing into certain cardiac cells, such as those of the sinoatrial node, causing them to depolarize.
action current. See action potential. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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