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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
06/05/1997 |
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Data da última atualização: |
31/03/2017 |
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Autoria: |
SMITH, E. N. |
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Título: |
Cutaneous heat flow during heating and cooling in Alligator mississipiensis. |
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Ano de publicação: |
1976 |
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Fonte/Imprenta: |
American Journal of Physiology, v.230, n.5, p.1205-1210, May, 1976. |
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Idioma: |
Inglês |
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Conteúdo: |
Direct in vivo measurement of heat flow across the skin of the American alligator (Alligator mississippiensis) showed increased heat flow during warming. Mean values at 25C during warming (15-35C) in air (airspeed 300 cm/s) were 17.9 +- 1.2 SE cal/cm2 per h (mean alligator wt 3.27 kg). Cooling heat flow at the same temperature was 13.6 +- 0.57 cal/cm2 per h. Subdermal heat flow was reduced during warming and was not significantly different from cutaneous heat flow during cooling. This indicated that the alligator was able to control its rate of heat exchange with the enviroenment by altering cutaneous perfusion. Atropine, phenoxybenzamine, nitroglycerin, and Xylocaine did not affect cutaneous heat flow or heating and cooling rates. Atropine bloked bradycardia during cooling. |
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Palavras-Chave: |
Reptile. |
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Thesagro: |
Fisiologia; Jacaré; Réptil. |
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Thesaurus Nal: |
Alligator mississippiensis; physiology. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01320naa a2200193 a 4500
001 1790982
005 2017-03-31
008 1976 bl --- 0-- u #d
100 1 $aSMITH, E. N.
245 $aCutaneous heat flow during heating and cooling in Alligator mississipiensis.
260 $c1976
520 $aDirect in vivo measurement of heat flow across the skin of the American alligator (Alligator mississippiensis) showed increased heat flow during warming. Mean values at 25C during warming (15-35C) in air (airspeed 300 cm/s) were 17.9 +- 1.2 SE cal/cm2 per h (mean alligator wt 3.27 kg). Cooling heat flow at the same temperature was 13.6 +- 0.57 cal/cm2 per h. Subdermal heat flow was reduced during warming and was not significantly different from cutaneous heat flow during cooling. This indicated that the alligator was able to control its rate of heat exchange with the enviroenment by altering cutaneous perfusion. Atropine, phenoxybenzamine, nitroglycerin, and Xylocaine did not affect cutaneous heat flow or heating and cooling rates. Atropine bloked bradycardia during cooling.
650 $aAlligator mississippiensis
650 $aphysiology
650 $aFisiologia
650 $aJacaré
650 $aRéptil
653 $aReptile
773 $tAmerican Journal of Physiology$gv.230, n.5, p.1205-1210, May, 1976.
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Registro original: |
Embrapa Pantanal (CPAP) |
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