نتایج جستجو برای: parasympathetic system

تعداد نتایج: 2233776  

Journal: :Folia morphologica 2015
T Kuder E Nowak

The aim of this paper was to summarise the knowledge about the autonomic cardiac innervation. It is generally known, that the cardiac nervous system consists of nerve plexoganglionic structures located mostly around the strategic regions of the heart. They consist of two main types of components: parasympathetic neurons, which exert an inhibitory effect, and sympathetic postganglionic nerve fib...

Journal: :Brain : a journal of neurology 2015
Trine Gjerløff Tatyana Fedorova Karoline Knudsen Ole L Munk Adjmal Nahimi Steen Jacobsen Erik H Danielsen Astrid J Terkelsen John Hansen Nicola Pavese David J Brooks Per Borghammer

Parkinson's disease is associated with early parasympathetic dysfunction leading to constipation and gastroparesis. It has been suggested that pathological α-synuclein aggregations originate in the gut and ascend to the brainstem via the vagus. Our understanding of the pathogenesis and time course of parasympathetic denervation in Parkinson's disease is limited and would benefit from a validate...

2015
Trine Gjerløff Tatyana Fedorova Karoline Knudsen Ole L. Munk Adjmal Nahimi Steen Jacobsen Erik H. Danielsen Astrid J. Terkelsen John Hansen Nicola Pavese David J. Brooks Per Borghammer

Parkinson’s disease is associated with early parasympathetic dysfunction leading to constipation and gastroparesis. It has been suggested that pathological a-synuclein aggregations originate in the gut and ascend to the brainstem via the vagus. Our understanding of the pathogenesis and time course of parasympathetic denervation in Parkinson’s disease is limited and would benefit from a validate...

Journal: :Advances in physiology education 2013
Christopher D Johnson Sean Roe Etain A Tansey

Sympathetic and parasympathetic divisions of the autonomic nervous system constantly control the heart (sympathetic and parasympathetic divisions) and blood vessels (predominantly the sympathetic division) to maintain appropriate blood pressure and organ blood flow over sometimes widely varying conditions. This can be adversely affected by pathological conditions that can damage one or both bra...

Journal: :Circulation 1998
J A Taylor D L Carr C W Myers D L Eckberg

BACKGROUND Survival of post-myocardial infarction patients is related inversely to their levels of very-low-frequency (0.003 to 0.03 Hz) RR-interval variability. The physiological basis for such oscillations is unclear. In our study, we used blocking drugs to evaluate potential contributions of sympathetic and vagal mechanisms and the renin-angiotensin-aldosterone system to very-low-frequency R...

Journal: :گوارش 0
mohammadhosein antikchi ahmad shavvakhi hasan salman-roghani golbarg mehrpoor

background: cirrhosis is a pathologically defined entity associated with a spectrumof characteristicmanifestations.the cardinal pathologic features reflect irreversible chronic injury of the hepatic parenchyma and include extensive fibrosis in association with the formation of regenerative nodules.autonomic dysfunction is a frequent and important complication of cirrhosis. the risk of mortality...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2007
Yuru Zhong Yan Bai Bufan Yang Kihwan Ju Kunsoo Shin Myoungho Lee Kung-Ming Jan Ki H Chon

Cardiac sympathetic and parasympathetic neural activities have been found to interact with each other to efficiently regulate the heart rate and maintain homeostasis. Quantitative and noninvasive methods used to detect the presence of interactions have been lacking, however. This may be because interactions among autonomic nervous systems are nonlinear and nonstationary. The goal of this work w...

Journal: :Medical hypotheses 2005
A Panzer M Viljoen

A baby is dependent on its primary caregiver (hereafter referred to as 'mother') for its emotional regulation. The development of emotional self-regulation is dependent on the growth and myelinisation of connections between cortical (control) and limbic (emotion) structures in the infant brain. The subcortical sympathetic limbic system is dominant from birth, and it is only at 14-18 months of a...

Journal: :Circulation 1994
M Moser M Lehofer A Sedminek M Lux H G Zapotoczky T Kenner A Noordergraaf

BACKGROUND Recent clinical studies have proposed standard deviation of heart rate as a diagnostic tool for the outcome of cardiac infarction. Mathematical analysis of heart rate variability shows that heart rate is influenced by different frequency components derived from different parts of the autonomous nervous system. In the experimental part of this study, we investigated the possibility of...

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