CORRECTIONS TO THE HAZELHOFF MODEL OF AIR-FLOW IN THE AVIAN LUNG

被引:25
作者
BRACKENBURY, J
机构
[1] Department of Biology, University of Salford, Salford
来源
RESPIRATION PHYSIOLOGY | 1979年 / 36卷 / 02期
关键词
Air sacs; Anterior air sacs; Bird; Lung airflow; Posterior air sacs;
D O I
10.1016/0034-5687(79)90021-5
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
The ventilatory activity of the anterior and posterior groups of air sacs was simulated in unidirectionally-ventilated geese and the resultant flow of air in the mediodorsal secondary bronchi was used as an indicator of the route which air followed through the lung. The results were used to isolate the roles of the respective groups of air sacs in the shaping of the unidirectional pattern of airflow known to exist during normal respiration. Findings indicated that, in contrast to Hazelhoff's model, the anterior and not the posterior sacs are responsible for producing the caudo-cranial flow of air through the parabronchi during inspiration. The posterior sacs, as predicted by Hazelhoff's model, are preliminary responsible for driving the caudo-cranial current through the parabronchi during expiration. © 1979.
引用
收藏
页码:143 / 154
页数:12
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