[Frequency-dependent action of acetylcholine on the propagation of excitation waves along the isolated left auricle of the rabbit].
It has been found that auricle tissue is characterized by non-monotonous time dependence of excitation conduction (tc) on the stimulation period (T). It is at T approximately 150 ms tc increase (with T decrease) is changed by a fall, after which this time abruptly rises again. Non-monotonous pattern of tc (T) relationship is concerned with secretion of acetylcholine from the terminals of parasympathetic nervous system. A hypothesis is formulated about t existence of acetylcholine barrier against auricular tachycardia induced by the excitation circulation.
Medvinskiĭ
A B
AB
D000109:Acetylcholine / Q000502:physiology*; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004558:Electric Stimulation; D005260:Female; D006329:Heart Conduction System / Q000187:drug effects / Q000502:physiology*; D066298:In Vitro Techniques; D008297:Male; D010275:Parasympathetic Nervous System / Q000502:physiology; D011817:Rabbits
D001285:Atropine; D000109:Acetylcholine
Chastotozavisimoe deĭstvie atsetilkholina na rasprostranenie volny vozbuzhdeniia po izolirovannomu levomu predserdiiu krolika.