Document Detail


Some characteristics of transmission from non-adrenergic, non-cholinergic excitatory nerves to the smooth muscle of the chicken.
MedLine Citation:
PMID:  6294167     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Non-adrenergic, non-cholinergic excitatory junction potentials (e.j.p.s) were recorded from the longitudinal muscle cells of the chicken rectum following stimulation of the nerve of Remak and field stimulation of intramural nerves. The amplitude of e.j.p.s was a direct function of the stimulus intensity. When peak depolarization of an e.j.p. reached threshold, a muscle action potential was evoked. When the extrinsic nerve was stimulated with a given stimulus intensity, the e.j.p.s recorded from different cells showed little change in amplitude and time-course, reached their peaks in 74 ms and declined to half their amplitudes in 230 ms. These corresponding values for the e.j.p.s in response to field stimulation were 51 ms and 159 ms respectively, but became larger as the microelectrode was moved away from the stimulating site. The amplitude became smaller also and the distance at which the e.j.p. declined to half its control amplitude was 4.3 mm. The time constant for the exponential decay phase of the e.j.p. was the same as the time constant for the muscle membrane. Facilitation of e.j.p. amplitude occurred during repetitive nerve stimulation; however, the facilitation was accompanied frequently by an initial depression phase during extrinsic nerve stimulation.
Authors:
S Komori; H Ohashi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the autonomic nervous system     Volume:  6     ISSN:  0165-1838     ISO Abbreviation:  J. Auton. Nerv. Syst.     Publication Date:  1982 Sep 
Date Detail:
Created Date:  1983-02-25     Completed Date:  1983-02-25     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  8003419     Medline TA:  J Auton Nerv Syst     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  199-210     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adrenergic Fibers / physiology
Animals
Chickens
Cholinergic Fibers / physiology
Cloaca / innervation
Duodenum / innervation
Electric Stimulation
Evoked Potentials
Female
Ganglia, Autonomic / physiology*
Male
Muscle, Smooth*
Nerve Fibers / physiology*
Neural Inhibition
Neuroeffector Junction / physiology
Reaction Time / physiology
Rectum / innervation*
Synaptic Transmission*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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