Diaphragmatic contribution to respiration in the rabbit.
- 1 May 1966
- journal article
- research article
- Published by American Physiological Society in Journal of Applied Physiology
- Vol. 21 (3) , 843-847
- https://doi.org/10.1152/jappl.1966.21.3.843
Abstract
The contribution of the diaphragm to ventilation has been studied in anesthetized rabbits by blocking the nervous conduction of the phrenic nerves by means of an electrotonic current. The tidal volume is seen to decrease to 41.9% of the control values during the block of both the phrenic nerves: if only one of the nerves is blocked the tidal volume is reduced to 74.0% of the control tidal volumes. During the block increased activity of the respiratory muscles not affected by the block is observed: the single motor units discharge at a faster rate and for a longer time. If the vagi are severed, the decrease of the tidal volume is more marked during either bilateral or monolateral block of the phrenic nerves: to 24.4 and 59.4% of the control values. In this condition no compensatory increase in activity of the other inspiratory muscles is observed.This publication has 3 references indexed in Scilit:
- Relation between changes of rib cage circumference and lung volumeJournal of Applied Physiology, 1965
- Relative contributions of the rib cage and the diaphragm to ventilation in manJournal of Applied Physiology, 1964
- Movements of the thoracic cage and diaphragm in respiration*The Journal of Physiology, 1954