Pulmonary receptors in reptiles: discharge patterns of receptor populations in snakes versus turtles

Página do item simplificado
dc.contributor.authorSundin, L.
dc.contributor.authorBurleson, M.
dc.contributor.authorWang, T.
dc.contributor.authorReid, S.
dc.contributor.authorSalgado, H.
dc.contributor.authorAbe, A.
dc.contributor.authorGlass, M.
dc.contributor.authorMilsom, W.
dc.contributor.institutionUniv British Columbia
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-02-26T17:11:15Z
dc.date.accessioned2014-05-20T13:59:03Z
dc.date.available2014-02-26T17:11:15Z
dc.date.available2014-05-20T13:59:03Z
dc.date.issued2001-03-01
dc.description.abstractThis study examines the effects of lung inflation/deflation with and without CO2 on the entire population of pulmonary receptors in the vagus nerve in two species of snakes and two species of turtles. We asked the question, how does the response of the entire mixed population of pulmonary stretch receptors (PSR) and intrapulmonary chemoreceptors (IPC) in species possessing both differ from that in species with only PSR? This was studied under conditions of artificial ventilation with the secondary goal of extending observations on the presence/absence of IPC to a further three species. Our results indirectly illustrate the presence of IPC in the Burmese python and South American rattlesnake but not the side necked turtle, adding support to the hypothesis that IPC first arose in diapsid reptiles. In both species of snake, CO2-sensitive discharge (presumably from IPC) predominated almost to the exclusion of CO2-insensitive discharge (presumably arising from PSR) while the opposite was true for both species of turtle. The data suggest that for animals breathing air under conditions of normal metabolism there is little to distinguish between the discharge profiles of the total population of receptors arising from the lungs in the different groups. Interestingly, however, under conditions of elevated environmental CO2 most volume-related feedback from the lungs is abolished in the two species of snakes, while under conditions of elevated metabolic CO2, it is estimated that volume feedback from the lungs would be enhanced in these same species.en
dc.description.affiliationUniv British Columbia, Dept Zool, Vancouver, BC V6T 1Z4, Canada
dc.description.affiliationUniv São Paulo, Dept Physiol, Ribeirao Preto, SP, Brazil
dc.description.affiliationUNESP, Dept Zool, Rio Claro, SP, Brazil
dc.description.affiliationUnespUNESP, Dept Zool, Rio Claro, SP, Brazil
dc.format.extent103-111
dc.identifierhttp://dx.doi.org/10.1007/s003600000153
dc.identifier.citationJournal of Comparative Physiology B-biochemical Systemic and Environmental Physiology. New York: Springer-verlag, v. 171, n. 2, p. 103-111, 2001.
dc.identifier.doi10.1007/s003600000153
dc.identifier.issn0174-1578
dc.identifier.urihttp://hdl.handle.net/11449/20980
dc.identifier.wosWOS:000167408500003
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal of Comparative Physiology B: Biochemical Systemic and Environmental Physiology
dc.relation.ispartofjcr2.517
dc.relation.ispartofsjr0,952
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectreptilespt
dc.subjectsnakespt
dc.subjectturtlespt
dc.subjectpulmonary stretch receptorspt
dc.subjectintrapulmonary CO2 receptorspt
dc.titlePulmonary receptors in reptiles: discharge patterns of receptor populations in snakes versus turtlesen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Zoologia - IBRC