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Lung histeresis: a morphological view

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dc.contributor.authorEscolar Castellón, J.de D.es
dc.contributor.authorEscolar castellón, A.es
dc.date.accessioned2011-06-08T09:04:48Z
dc.date.available2011-06-08T09:04:48Z
dc.date.issued2004
dc.description.abstractThe lung is an imperfect elastic body and for this reason dissipates energy. The energy applied to the lung in inspiration is not recovered in expiration. The property of dissipating energy receives the name of hysteresis. Lung hysteresis can be quantified because it applies to the area between the ascending and descending portions of the pressure-volume curve. Lung hysteresis comprises parenchymal hysteresis and bronchial hysteresis. Each point on the pressure-volume applies to a different morphology of the lung parenchyma. The changes that take place in the lung architecture during expiration are related to alveolar recruitment: in inspiration the lung volume increases by the opening of distal air units. In expiration the lung volume decreases due to derecruitment. The energy is dissipated mainly in the alveolar recruitment process, in which forces of molecular adhesion, such as surface tension, are at work. Bronchial hysteresis involves the dead space and the bronchial wall being greater in expiration.es
dc.formatapplication/pdfes
dc.format.extent8es
dc.identifier.issn0213-3911es
dc.identifier.urihttp://hdl.handle.net/10201/21535
dc.languageenges
dc.publisherMurcia : F. Hernándezes
dc.relation.ispartofHistology and histopathologyes
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectHysteresises
dc.subjectBronchuses
dc.subject.otherCDU::6 - Ciencias aplicadas::61 - Medicinaes
dc.titleLung histeresis: a morphological viewes
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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Histology and histopathology Vol.19, nº 1 (2004)