...: is it a useful (adaptive) or harmful (non-adaptive) trait? Fish heart Electrocardiogram Cardiac arrhythmia Sodium current Chronaxie Rheobase Highlighted Article: Heat-induced heart failure in rainbow trout is due to atrio-ventricular block, an outcome from the opposite effects...

... obliquely striated arm muscle fibers do not produce action potentials or elongation. Calcium current Cephalopod muscle Current clamp Patch clamp Sodium current Voltage clamp Contractile properties of muscle fibers, including maximum tension, shortening velocity, twitch duration...

... heart sodium current action potential upstroke impulse conduction Oncorhynchus mykiss . The generation of action potentials (AP) and synchronized spread of excitation are essential features for the coordinated pumping action of the heart. The spontaneous rhythm of the heart is generated...

... system. Biol. Rev. 49 , 477 -514. Leblanc, N. and Hume, J. R. ( 1990 ). Sodium current-induced release of calcium from cardiac sarcoplasmic reticulum. Science . 248 , 372 -376. Lutz, P. L. and Nilsson, G. E. ( 1997 ). Contrasting strategies for anoxic brain survival – glycolysis up or down...

.... * Author for correspondence (e-mail: [email protected] ) 15 12 1003 © The Company of Biologists Limited 2004 2004 zebrafish Danio rerio muscle sodium current potassium current action potential The excitability of muscle cells is shaped in part by the properties...

... recordings from cultured cells revealed that these cells possess a variety of ionic currents, including a fast transient sodium current, a calcium current and several potassium currents. The sodium current does not inactivate completely but instead decays to a steady-state component which has the same...

... capillata neurones may account for some of their unusual physiological and pharmacological properties. © 1993 by Company of Biologists 1993 jellyfish gangliosides phospholipids sterols sodium current Cyanea capillata Cnidarians are the lowest extant organisms to possess...

... to the isolation procedure. 3 6 1987 © 1987 by Company of Biologists 1987 cnidocytes Cnidaria voltage-clamp sodium current potassium current Cnidocytes, the major diagnostic feature of members of the phylum Cnidaria, are unique cells. For this reason and because of the medical...

... 1987 sodium current calcium current jellyfish coelenterate voltage-clamp scvphozoa Action potentials in neurones and other electrically excitable cells are produced by the movements of ions through discrete, voltage-gated ion channels. While Ca 2+ -dependent action potentials...