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Cation movements in perfused giant axons
Author(s) -
Shaw T. I.
Publication year - 1966
Publication title -
the journal of physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.802
H-Index - 240
eISSN - 1469-7793
pISSN - 0022-3751
DOI - 10.1113/jphysiol.1966.sp007819
Subject(s) - neuroscience , chemistry , anatomy , biophysics , biology
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.