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Gating mechanism

Gating mechanism

Occurrence of the maximum refractory Period among cardiac conducting cells approximately 2 mm proximal to the terminal Purkinje fibres in the ventricular muscle, beyond which the refractory Period is shortened through a sequence of purkinje cells, transitional cells, and muscular cells; gating mechanism may be a cause of ventricular aberration, bidirectional tachycardia, and concealed extrasystoles, a mechanism by which painful impulses may be blocked from entering the spinal cord.

Compare: gate-control theory.

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The Fiber Disease

... "In both the visual and olfactory systems a "quantal" mechanism of detection is possible, because the absorption of a photon or ... of the stimulus to ion channels, in a manner reminiscent of the direct gating of post-synaptic ion channels in various synaptic mechanisms. The ...

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by Skytroll
Wed Nov 01, 2006 6:35 pm
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6245559

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