| Orbeli effect | The fatigue of a muscle stimulated by its nerve (i.e., indirectly) is reduced by concurrent stimulation of sympathetic fibres to the muscle; thought to be caused by norepinephrine diffusing from adrenergic fibres which innervate blood vessels in the muscle. (05 Mar 2000) |
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| Orbeli, Leon | <person> Russian physiologist, 1882-1958. See: Orbeli effect. (05 Mar 2000) |