[Depressor reactions to sural nerve stimulation in intact unanesthetized cats].
Changes in the arterial pressure, in the heart and respiratory rate evoked by the gastrocnemuis nerve stimulation were studied on conscious cats before and during intravenous injection of noradrenaline. Stimulation of the gastrocnemius nerve increased the arterial pressure, the heart and respiratory rates. The same stimulation of the nerve during hypertension caused by noradrenaline injection led to the fall of arterial pressure and tachycardia. The depressor response failed to change under the effect of the beta-adrenoreceptor block and disappeared after the m-cholinoreceptor block with methylatropine. The depressor response was absent in the unanesthetized decerebrated cats. It is supposed that the depressor response of the arterial pressure depended on the strong cholinergic vasodilatation, reflexively evoked by stimulation of the motor nerve in the intact cats.
D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001286:Atropine Derivatives / Q000494:pharmacology; D001794:Blood Pressure / Q000187:drug effects; D002415:Cats; D006339:Heart Rate; D009638:Norepinephrine / Q000494:pharmacology; D010525:Peripheral Nerves / Q000502:physiology*; D011311:Pressoreceptors / Q000187:drug effects; D011433:Propranolol / Q000494:pharmacology; D011942:Receptors, Adrenergic, alpha; D011943:Receptors, Adrenergic, beta; D011950:Receptors, Cholinergic; D012018:Reflex; D013497:Sural Nerve / Q000502:physiology
D001286:Atropine Derivatives; D011942:Receptors, Adrenergic, alpha; D011943:Receptors, Adrenergic, beta; D011950:Receptors, Cholinergic; D011433:Propranolol; D000109:Acetylcholine; D009638:Norepinephrine
Depressornye reaktsii na razdrazhenie ikronozhnogo nerva u intaktnykh nenarkotizirovannykh koshek