[Motor and bioelectrical activity of skate, plaice, and cod stomach].
In chronic experiments studies have been made on motor and bioelectrical activity of the stomach in the skate Raja radiata, plaice Pleuronectes platessa, and cold Gadus morhua morhua. Interspecific differences were found. Elements of periodic activity in the stomach of hungry cod were observed. After feeding, the amplitude of potentials in stomach muscles decreased, the frequency of the potentials remaining unchanged. Stimulation of the external chemoreceptors by food extracts inhibited motor activity of the stomach. Bilateral vagotomy induced a short-term (3--6 days) disturbance in motor and bioelectrical activity of the stomach. It is suggested that together with autonomic peripheral nerve-muscular mechanisms, in regulation of functional activity of the stomach in the cod central mechanisms are also involved.
D000818:Animals; D004594:Electrophysiology; D005399:Fishes / Q000502:physiology*; D005769:Gastrointestinal Motility; D006815:Hunger / Q000502:physiology; D010507:Periodicity; D013045:Species Specificity; D013270:Stomach / Q000294:innervation / Q000502:physiology*; D014628:Vagotomy; D014630:Vagus Nerve / Q000502:physiology
Dvigatel'naia i bioélektricheskaia aktivnost' zheludka skata, kambaly i treski.