Bronchial tree Architecture in Mammals of Diverse Body Mass

Bronchial tree Architecture in Mammals of Diverse Body Mass

Alternative title Arquitectura del Árbol Bronquial en Mamíferos de Diferentes Masas Corporales
Author Monteiro, Adilson Autor UNIFESP Google Scholar
Smith, Ricardo Luiz Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract The anatomy of mammal's lung air space constitutes the bronchial tree which disposition is associated to air flux dynamics. Casts obtained from human, pig and rat lungs were studied to analyze possible differences of the bronchial tree architecture in mammals with diverse dimensions and posture. Air spaces were filled with polymers through trachea followed by acid corrosion. Tracheal and main bronchial division's diameters were measured to relate with body mass using allometry. The results revealed a dichotomic bronchial branching pattern in the human casts and a monopodial pattern in animals. In allometric relationship trachea was larger in rats, then pigs and lastly in humans, differences were statistically significant, the same occurs in right bronchus, as in the left bronchus there was no difference between rat and pig. The linear relationship between the human tracheal diameters was 1.2 times larger than the pig and 6.7 times larger than the rat; the pig tracheal diameter was 5.6 times larger than the rat. Quadruped position of the pig and rat is linked to a horizontal air way while the erect position, biped in human, correspond to a vertical air way. A big mammal shows less respiratory frequency than small mammals. Mammals with small, medium and high body mass allied to diverse posture and habits was compared revealing morphological differences in the bronchial trees as different allometric correlations between quadruped animals and human biped.
Keywords Bronchia
Anatomy
Human
Pig
Rat
Language English
Sponsor Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Date 2014-03-01
Published in International Journal Of Morphology. Temuco: Soc Chilena Anatomia, v. 32, n. 1, p. 312-318, 2014.
ISSN 0717-9502 (Sherpa/Romeo, impact factor)
Publisher Soc Chilena Anatomia
Extent 312-318
Origin http://dx.doi.org/10.4067/S0717-95022014000100050
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000336654600050
SciELO ID S0717-95022014000100050 (statistics in SciELO)
URI http://repositorio.unifesp.br/11600/44086

Show full item record




File

File Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Search


Browse

Statistics

My Account