PMID: 60976Feb 1, 1976Paper

Effect of curarization on sensitivity of chicken latissimus dorsi to electric current

Archives internationales de physiologie et de biochimie
E Cambier


(1.) To test the sensitivity to electric current of the latissimus dorsi and, therefore, its ability to yield action potential, we have studied the effect of curarisation on the amplitude of the isometric tetanus during "massive" stimulations by alternative current. (2.) Curarisation causes a considerable but reversible reduction of the tetanic tension of the latissimus dorsi anterior (L.D.A.) but has no effect on the tetanus of the latissimus dorsi posterior (L.D.P.). It is concluded that a part of the L.D.A. is not sensitive to electric current and is thus unable to yield action potentials, unlike the opinion of some authors. (3.) Rising the temperature has an inverse effect on the speed of the tetanus ascending phase, depending on whether the L.D.A. has been curarised or not. This show the existence of two types of excitation processes of very different nature in this muscle. (4.) Direct current is much less efficient than alternative current on the curarised L.D.A.


May 1, 1972·The Journal of Physiology·K L Magleby, C F Stevens
Jan 1, 1970·Annual Review of Physiology·M V BENNETT
Jun 1, 1972·The American Journal of Physiology·A R Luff, H L Atwood
May 1, 1972·The Journal of Physiology·K L Magleby, C F Stevens
Dec 1, 1968·The Journal of Physiology·U Proske, P Vaughan
Mar 1, 1969·The Journal of Physiology·T Hidaka, N Toida
Apr 1, 1966·The Journal of Physiology·L Levine
Jul 1, 1966·The Journal of General Physiology·P Bach-y-Rita, F Ito
May 21, 1966·Nature·R Miledi, J Zelená
Nov 1, 1967·The Journal of Physiology·P HníkJ Zelená
Jun 28, 1956·The Journal of Physiology·W BURKE, B L GINSBORG
Dec 1, 1959·Journal of Cellular and Comparative Physiology·A TAKEUCHI
Mar 1, 1960·The Journal of Physiology·B L GINSBORG
Jan 1, 1963·Acta Physiologica Scandinavica·P ANDERSENY LOYNING
Dec 1, 1963·The Journal of Physiology·A HESS, G PILAR
Jan 1, 1964·Annual Review of Physiology·M V BENNETT

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