L. Lizardi

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Voltage-clamp experiments using the three-microelectrode voltage clamp technique were performed on ventroabdominal flexor muscles of the crustacean Atya lanipes. Potassium and chloride currents were found to underlie the normal, passive response of the muscle. Blocking potassium currents with tetraethylammonium and replacing chloride ions with(More)
The superficial (tonic) abdominal flexor muscles of Atya lanipes do not generate Ca2+ action potentials when depolarized and have no detectable inward Ca2+ current. These fibers, however, are strictly dependent on Ca2+ influx for contraction, suggesting that they depend on Ca2+-induced Ca2+ release for contractile activation. The nature of the communication(More)
1. Following exposure to the sulfhydryl reagents known as alpha,beta-unsaturated carbonyl compounds, the ventroabdominal flexor muscles of the crustacean Atya lanipes, which are normally completely inexcitable, generate trains of overshooting calcium action potentials; the effects of organic calcium channel antagonists and potassium channel blockers on the(More)
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