The Efflux of Sodium Ions from the Last Abdominal Ganglion of the Cockroach, Periplaneta Americana L.
Open Access
- 1 December 1961
- journal article
- Published by The Company of Biologists in Journal of Experimental Biology
- Vol. 38 (4), 729-736
- https://doi.org/10.1242/jeb.38.4.729
Abstract
1. The rate of loss of 24Na from the terminal abdominal ganglion of Periplaneta americana L. has been studied by measuring the decline in radioactivity associated with an isolated preparation maintained in flowing physiological solution. 2. The rate of sodium efflux was substantially reduced in the presence Of 0.2 mM./l. dinitrophenol and in potassium-free solution. 3. The extrusion of 24Na was not significantly affected by the removal of the fibrous and cellular sheath surrounding the ganglion. The rate-limiting process in the efflux of sodium measured in the experiments was not, therefore, the transfer of ions across the nerve sheath, but an extrusion from tissues lying at a deeper level in the central nervous system.This publication has 7 references indexed in Scilit:
- The Movements of Sodium Ions in the Isolated Abdominal Nerve Cord of the Cockroach, Periplaneta AmericanaJournal of Experimental Biology, 1961
- Sodium and Potassium Fluxes in the Abdominal Nerve Cord of the Cockroach, Periplaneta Americana LJournal of Experimental Biology, 1961
- The Nutrition of the Central Nervous System in the Cockroach Periplaneta Americana LJournal of Experimental Biology, 1960
- The Nutrition of the Central Nervous System in the Cockroach Periplaneta Americana LJournal of Experimental Biology, 1960
- PROPERTIES OF THE CONNECTIVE TISSUE SHEATH OF THE COCKROACH ABDOMINAL NERVE CORD ,The Biological Bulletin, 1956
- Potassium Ions and Insect Nerve MuscleJournal of Experimental Biology, 1953
- Potassium, sodium and water interchange in irritable tissues and haemolymph of an omnivorous insect, periplaneta americanaJournal of Cellular and Comparative Physiology, 1948