CHRONIC EXPERIMENTS STUDYING THE ROLE OF SYMPATHETIC TONE IN REGULATING HEART ACTIVITY

Experimental data that have appeared lately are the evidence of the fact that sympathetic nerve exerts constant (tonic) stimulating influence on heart activity, what contradicts to formed (classical) conception on regulation of heart activity by a sympathetic nerve. However experimental data us have...

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Main Author: V. M. Smirnov
Format: Article
Language:Russian
Published: «FIRMA «SILICEA» LLC 2001-04-01
Series:Российский кардиологический журнал
Subjects:
Online Access:https://russjcardiol.elpub.ru/jour/article/view/2188
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author V. M. Smirnov
author_facet V. M. Smirnov
author_sort V. M. Smirnov
collection DOAJ
description Experimental data that have appeared lately are the evidence of the fact that sympathetic nerve exerts constant (tonic) stimulating influence on heart activity, what contradicts to formed (classical) conception on regulation of heart activity by a sympathetic nerve. However experimental data us have worked under conditions of chronical experiment with blocade of sympathetic and parasympathetic nerve system by pharmaceutical medications, on the contrary, confirm classical ideas of the abscence of sympathetic nerve’s tonic influence on heart. According to our data, decrease of frequency of heart contractions in other specialists’ experiments is a result of effects of experiment’s conditions (narcosis’ kind and depth, possible hypothermia, experiment’s duration, sort of pharmaceutical medications). Frequency of heart contractions, as distinct hau the of blood vessels, is assessed in rest by a level of expression of wandering n.vagus tone and humoral substances circulating in blood. Classical concepts of abscence of tone of sympathetic nerves for heart remain in effect.
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spelling doaj.art-b566a11c2c304452baaea16a4da452e62023-03-29T21:23:08Zrus«FIRMA «SILICEA» LLCРоссийский кардиологический журнал1560-40712618-76202001-04-010254581940CHRONIC EXPERIMENTS STUDYING THE ROLE OF SYMPATHETIC TONE IN REGULATING HEART ACTIVITYV. M. Smirnov0Российский государственный медицинский университет, МоскваExperimental data that have appeared lately are the evidence of the fact that sympathetic nerve exerts constant (tonic) stimulating influence on heart activity, what contradicts to formed (classical) conception on regulation of heart activity by a sympathetic nerve. However experimental data us have worked under conditions of chronical experiment with blocade of sympathetic and parasympathetic nerve system by pharmaceutical medications, on the contrary, confirm classical ideas of the abscence of sympathetic nerve’s tonic influence on heart. According to our data, decrease of frequency of heart contractions in other specialists’ experiments is a result of effects of experiment’s conditions (narcosis’ kind and depth, possible hypothermia, experiment’s duration, sort of pharmaceutical medications). Frequency of heart contractions, as distinct hau the of blood vessels, is assessed in rest by a level of expression of wandering n.vagus tone and humoral substances circulating in blood. Classical concepts of abscence of tone of sympathetic nerves for heart remain in effect.https://russjcardiol.elpub.ru/jour/article/view/2188heartsympathetic nerve and its toneregulation
spellingShingle V. M. Smirnov
CHRONIC EXPERIMENTS STUDYING THE ROLE OF SYMPATHETIC TONE IN REGULATING HEART ACTIVITY
Российский кардиологический журнал
heart
sympathetic nerve and its tone
regulation
title CHRONIC EXPERIMENTS STUDYING THE ROLE OF SYMPATHETIC TONE IN REGULATING HEART ACTIVITY
title_full CHRONIC EXPERIMENTS STUDYING THE ROLE OF SYMPATHETIC TONE IN REGULATING HEART ACTIVITY
title_fullStr CHRONIC EXPERIMENTS STUDYING THE ROLE OF SYMPATHETIC TONE IN REGULATING HEART ACTIVITY
title_full_unstemmed CHRONIC EXPERIMENTS STUDYING THE ROLE OF SYMPATHETIC TONE IN REGULATING HEART ACTIVITY
title_short CHRONIC EXPERIMENTS STUDYING THE ROLE OF SYMPATHETIC TONE IN REGULATING HEART ACTIVITY
title_sort chronic experiments studying the role of sympathetic tone in regulating heart activity
topic heart
sympathetic nerve and its tone
regulation
url https://russjcardiol.elpub.ru/jour/article/view/2188
work_keys_str_mv AT vmsmirnov chronicexperimentsstudyingtheroleofsympathetictoneinregulatingheartactivity