A general model for the origin of allometric scaling laws in biology.
Science
; 276(5309): 122-6, 1997 Apr 04.
Article
em En
| MEDLINE
| ID: mdl-9082983
ABSTRACT
Allometric scaling relations, including the 3/4 power law for metabolic rates, are characteristic of all organisms and are here derived from a general model that describes how essential materials are transported through space-filling fractal networks of branching tubes. The model assumes that the energy dissipated is minimized and that the terminal tubes do not vary with body size. It provides a complete analysis of scaling relations for mammalian circulatory systems that are in agreement with data. More generally, the model predicts structural and functional properties of vertebrate cardiovascular and respiratory systems, plant vascular systems, insect tracheal tubes, and other distribution networks.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Constituição Corporal
/
Sistema Cardiovascular
/
Fractais
/
Modelos Biológicos
/
Modelos Cardiovasculares
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Science
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Estados Unidos