压榨机 发表于 2025-3-21 17:29:52
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The Relative Contributions of Various Time-Dependent Membrane Currents to Pacemaker Activity in the n reality a developing inward current which cannot be carried by potassium ions alone (see DiFrancesco, this volume). It probiably has the same ionic composition as i. (i.) in the SA node and is carried by both sodium and potassium ions (DiFrancesco, 1980; Brown et al., 1980). This being the case, b来就得意 发表于 2025-3-22 09:23:21
The Current IK2 in Purkinje Fibres Reinterpreted and Identified with the Current IF in the SA Nodef any K-dependent current is far more drastic than any distortion induced by non-uniformities. Indeed, evidence given in this paper shows how the presence of strong K-depletion during hyperpolarizations can alter the analysis of the pacemaker current “i.” so substantially as to make an inward curren抱狗不敢前 发表于 2025-3-22 16:42:16
Cellular Communication: Introductory Remarksnimale Zellketten (...): die einzelnen Zellen vermoegen sich zwar waehrend des Lebens den Erregungsvorgang durch Contakt mitzutheilen, sterben aber jede fuer sich ab”. In a publication dated 1876 Engelman attempted to extend the general validity of his idea to single nerve fibres. His observations,抱狗不敢前 发表于 2025-3-22 18:19:59
Formation and Growth of Myocardial Gap Junctions: In Vivo and In Vitro Studiese communicating unit (i.e., “connexon”) is a hexameric polymer which spans the membrane and would possess a central channel. It has been speculated that rotational displacement of the subunits to glide against each other, represents the mechanism whereby the channel is opened and closed.adhesive 发表于 2025-3-22 23:27:50
Normal and Malignant Hematopoiesislic depolarization. This is discussed in section I, concerning the fundamental properties of pacemaker cells with special reference to ionic membrane currents. Although views still quite differ about the exact nature of the membrane processes that cause the automatic pacemaker discharge there is agr有杂色 发表于 2025-3-23 03:36:51
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