The cytology of the neurones of Helix aspersa.
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منابع مشابه
Comparison of the effect of quasitrapezoidal and rectangular pulses on bio- electrical activity, calcium spike properties and afterhyperpolarization potentials of Fl cells of Helix aspersa using intracellular recording
While the effect of changes of stimulus waveform (quasitrapezoidal and rectangular current pulses) on nerve activation is clear, but there is no evidence on the effect of quasitrapezoidal pulses on ionic currents of cellular membrane. In the present study, the effect of depolarizing quasi-trapezoidal current pulses, in comparison with that of depolarizing rectangular current pulses, on firing...
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L I G H T microscopical investigations of the neurones of pulmonate gastropods reveal that certain nerve-cells contain neurosecretory droplets. This has been observed in Basommatophora (Grzycki, 1951; Lever, 1957, 1958; Lever, Kok, Meuleman, andjoosse, 1961 ;Wautier, Pavans de Ceccatty, Richardot, Buisson, and Hernandez, 1961) and in stylommatophoran slugs, such as Limax, Milax, and Arion (Herl...
متن کاملThe modulatory effects of orexin B on the calcium channels activity in neuronal cells of Helix aspersa (garden snail)
Introduction: The functional effects of orexin-B on the calcium spikes and excitability of the neuronal soma membrane of garden snail, Helix aspersa were studied. Methods: Conventional intracellular recording, under the current clamp conditions was performed to examine the effects of orexin-B on the configuration and electrophysiological properties of calcium spikes. Results: Application o...
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Ion channels are responsible for control of cell function in excitable tissues such as heart and brain and also in organs and tissues traditionally thought to be non- excitable including liver and epithelium. In the present research, the effect of lead (Pb2+) on Ca2+ -dependent action potential and currents was studied in F77 neuronal soma membrane of Helix aspersa. For this purpose, action pot...
متن کاملModification of Nifedipine Inhibitory Effect on Calcium Spike and L-Type Calcium Current by Ethanol in F1 Neuron of Helix aspersa
There is strong evidence demonstrating that nifedipine dissolved in ethanol selectively inhibits only L-type Ca2+ current. In addition, acute ethanol exposure reduces voltage-dependent calcium currents. In the present study, we investigated the antagonistic effect of fixed concentration of nifedipine dissolved in different concentration of ethanol on L-type Ca2+ current. In a Na+-K+ free soluti...
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عنوان ژورنال:
- The Quarterly journal of microscopical science
دوره 88 Pt 4 شماره
صفحات -
تاریخ انتشار 1947