Cation movements in perfused giant axons.
1. The net movements of Na and K into resting squid giant axons perfused with a K(2)SO(4) artificial axoplasm have been determined. Na enters at a rate of 131 +/- 25 p-mole/cm(2).sec. The K leakage from the fibre is 942 +/- 566 p-mole/cm(2).sec; clearly this latter figure shows how large is the uncertainty in the exact value for the potassium leakage.2. The net entry of sodium associated with activity in such fibres has been measured and is 5.7 +/- 0.7 p-mole/cm(2).impulse.
11 references, click to expand
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EFFECTS OF VARIOUS POTASSIUM SALTS AND PROTEASES UPON EXCITABILITY OF INTRACELLULARLY PERFUSED SQUID GIANT AXONS.Proc Natl Acad Sci U S A. 1964 Sep;52:804-10 PMID: 14212560
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Kinetics of ion movement in the squid giant axon.J Gen Physiol. 1955 Nov 20;39(2):279-300 PMID: 13271727
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Active transport of cations in giant axons from Sepia and Loligo.J Physiol. 1955 Apr 28;128(1):28-60 PMID: 14368574
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The effects of changes in internal ionic concentrations on the electrical properties of perfused giant axons.J Physiol. 1962 Nov;164:355-74 PMID: 13969165
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The sodium and potassium content of cephalopod nerve fibers.J Physiol. 1951 Jun;114(1-2):151-82 PMID: 14861789
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The effects of injecting 'energy-rich' phosphate compounds on the active transport of ions in the giant axons of Loligo.J Physiol. 1960 Jul;152:561-90 PMID: 13806926
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The ionic movements during nervous activity.J Physiol. 1951 Jun;114(1-2):119-50 PMID: 14861788
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Studies on permeability in relation to nerve function, ionic movements across exonal membranes.Biochim Biophys Acta. 1950 Jan;4(1-3):96-114 PMID: 15403915
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Electronic measurement of the intracellular concentration and net flux of sodium in the squid axon.J Gen Physiol. 1961 Sep;45:77-92 PMID: 13772321
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The effect of sodium ions on the electrical activity of giant axon of the squid.J Physiol. 1949 Mar 1;108(1):37-77 PMID: 18128147
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