title: [Role of the pulmonary mechanoreceptor apparatus in molding the natural respiration of the frog Rana temporaria].
abstract: In acute experiments on the frog Rana temporaria, studies have been made of the effect of afferent impulsation in pulmonary mechanoreceptors on respiration pattern. Simultaneous recordings were made of total afferent activity in the pulmonary branch of the vagal nerve and of the activity of motor respiratory nerves as an index of respiration pattern. It was shown that to the end of ventilation period, the level of afferentation decreases up to a threshold value which favours the onset of inspiration. Artificial decrease of afferentation level by the increase in CO2 content in the lung or by novocain application to the latter always resulted in extra-inspiration. On vagotomized frogs, it was found that maximum level of afferent influences is necessary for the onset of expiration.
mesh_terms: D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D004594:Electrophysiology; D007002:Hypoglossal Nerve / Q000502:physiology; D008465:Mechanoreceptors / Q000502:physiology*; D011650:Pulmonary Alveoli / Q000294:innervation / Q000502:physiology*; D011896:Rana temporaria / Q000502:physiology*; D012119:Respiration; D014630:Vagus Nerve / Q000502:physiology
vernacular_title: Rol' mekhanoretseptornogo apparata legkikh v formirovanii estestvennogo dykhaniia u liagushki Rana temporaria.