[The role of the sympathetic nervous system-activating structures of the ventrolateral area of the medulla oblongata in the regulation of cardiac activity].
Localization of sympathoexcitatory neurons regulating in the ventrolateral medulla area participating in the heart rate regulation has been studied. Results suggest, that sympathoexcitatory neurons in the cat are confined to a definite region (middle line of roots of XII nerve and by 4.0 mm more rostral) of rostral ventrolateral medulla. Stimulation of these right regions increases the heart rate, but that of the left regions elevates dp/dt max. Their activity mediated pathways (conduction velocity 10.5 + 0.4 m/s and 6.1 + 0.4 m/s) innervated of "nonclassical" sympathetic neurons of the ventral horn and sympathetic preganglionic neurons of intermediolateral cell column of the spinal cord.
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D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D006321:Heart / Q000294:innervation*; D006339:Heart Rate / Q000502:physiology*; D008526:Medulla Oblongata / Q000502:physiology*; D009200:Myocardial Contraction / Q000502:physiology*; D009434:Neural Pathways / Q000502:physiology; D013116:Spinal Cord / Q000502:physiology*; D013564:Sympathetic Nervous System / Q000502:physiology*; D009435:Synaptic Transmission / Q000502:physiology
Znachenie simpatoaktiviruiushchikh struktur ventrolateral'noĭ oblasti prodolgovatogo mozga v reguliatsii deiatel'nosti serdtsa.