[The mechanisms regulating the activity of the longitudinal layer of the intestinal smooth muscle in the Dolly Varden trout].
Spontaneous myogenic rhythmic motility of the Salvelinus malma curilus smooth muscle structures was studied. The findings suggested presence of a general tonic inhibitory action of the enteral part of the metasympathetic nervous system on myogenic motility of intestinal longitudinal layer. The splanchnic nerve effect on intestinal motor activity was revealed. Dependence of obvious components of visceromotor response on the stimulation frequency, was shown. Possible origin of these components was discussed on the basis of experimentally obtained characteristics of effects of the transmitter substances on the smooth muscle structure. Functioning of neural muscular structures was compared in the mammalian and fish intestines.
Gnetov
A V
AV
Nozdrachev
A D
AD
Stepanova
T P
TP
D000818:Animals; D004558:Electric Stimulation / Q000379:methods; D005769:Gastrointestinal Motility / Q000187:drug effects / Q000502:physiology; D066298:In Vitro Techniques; D007422:Intestines / Q000187:drug effects / Q000294:innervation / Q000502:physiology; D009130:Muscle, Smooth / Q000187:drug effects / Q000294:innervation / Q000502:physiology*; D013564:Sympathetic Nervous System / Q000187:drug effects / Q000502:physiology; D014337:Trout / Q000502:physiology*
Mekhanizmy reguliatsii aktivnosti prodol'nogo sloia gladkikh myshts kishki mal'my.