Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/23771
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dc.contributor.authorKlein, Wilfrieden
dc.contributor.authorOwerkowicz, Tomaszen
dc.date.issued2006en
dc.identifier.citationPhysiological and Biochemical Zoology, 2006; 79(6):1019-1032en
dc.identifier.issn1522-2152en
dc.identifier.urihttp://hdl.handle.net/2440/23771-
dc.description.abstractAspiration breathing is the dominant mechanism of lung inflation among extant amniotes. However, aspiration has two fundamental problems associated with it: paradoxical visceral translation and partial lung collapse. These can constrain the inspiratory tidal volume, reduce the effective lung ventilation, and ultimately curtail the aerobic capacity of an animal. Separation of the pleural and peritoneal cavities by an intracoelomic septum can restrict the cranial shift of abdominal viscera and provide structural support to the caudal lung surface. A muscular septum, such as the diaphragm of mammals or the diaphragmaticus of crocodilians, can exert active control over visceral translation and the degree of lung inflation. To a lesser degree, a nonmuscular septum can also function as a passive barrier when stretched taut by rib rotation. Studies of the posthepatic septum in teiid lizards and the postpulmonary septum in varanid lizards underscore the importance of nonmuscular septa in aspiration. These septa provide plausible functional models that help us infer the evolution of mammalian and avian lung ventilatory systems, respectively.en
dc.description.statementofresponsibilityWilfried Klein, Tomasz Owerkowiczen
dc.language.isoenen
dc.publisherUniversity of Chicago Pressen
dc.titleFunction of intracoelomic septa in lung ventilation of amniotes: Lessons from lizardsen
dc.typeJournal articleen
dc.contributor.schoolSchool of Earth and Environmental Sciencesen
dc.identifier.doi10.1086/507656en
Appears in Collections:Earth and Environmental Sciences publications

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