Intraspecific scaling of arterial blood pressure in the Burmese python
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
03/12/2014
03/12/2014
01/07/2014
|
Resumo |
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Interspecific allometric analyses indicate that mean arterial blood pressure (MAP) increases with body mass of snakes and mammals. In snakes, MAP increases in proportion to the increased distance between the heart and the head, when the heart-head vertical distance is expressed rho gh (where rho is the density of blood, g is acceleration due to gravity and h is the vertical distance above the heart), and the rise in MAP is associated with a larger heart to normalize wall stress in the ventricular wall. Based on measurements of MAP in Burmese pythons ranging from 0.9 to 3.7 m in length (0.20-27 kg), we demonstrate that although MAP increases with body mass, the rise in MAP is merely half of that predicted by heart-head distance. Scaling relationships within individual species, therefore, may not be accurately predicted by existing interspecific analyses. |
Formato |
2232-2234 |
Identificador |
http://dx.doi.org/10.1242/jeb.099226 Journal Of Experimental Biology. Cambridge: Company Of Biologists Ltd, v. 217, n. 13, p. 2232-2234, 2014. 0022-0949 http://hdl.handle.net/11449/112938 10.1242/jeb.099226 WOS:000339272900010 |
Idioma(s) |
eng |
Publicador |
Company of Biologists Ltd |
Relação |
Journal of Experimental Biology |
Direitos |
closedAccess |
Palavras-Chave | #Allometry #Scaling #Cardiovascular #Blood pressure #Snake #Gravity |
Tipo |
info:eu-repo/semantics/article |