Adrenergic Control of Oxygen Transfer in Perfused Gills of the Cod, Gadus Morhua
A perfused and ventilated gill preparation is described in which the pO 2 of the perfusion medium and the irrigating water is controlled. Dorsal aorta effluent pO 2 and flow were measured together with the branchial vascular resistance. Decreasing pO 2 in the perfusion fluid caused increased branchi...
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fthighwire:oai:open-archive.highwire.org:jexbio:102/1/327 2023-05-15T16:19:06+02:00 Adrenergic Control of Oxygen Transfer in Perfused Gills of the Cod, Gadus Morhua PETTERSSON, KNUT 1983-01-01 00:00:00.0 text/html http://jeb.biologists.org/cgi/content/short/102/1/327 en eng Company of Biologists http://jeb.biologists.org/cgi/content/short/102/1/327 Copyright (C) 1983, Company of Biologists Journal Articles TEXT 1983 fthighwire 2015-02-28T20:56:32Z A perfused and ventilated gill preparation is described in which the pO 2 of the perfusion medium and the irrigating water is controlled. Dorsal aorta effluent pO 2 and flow were measured together with the branchial vascular resistance. Decreasing pO 2 in the perfusion fluid caused increased branchial vascular resistance, probably by constriction of efferent lamellar arterioles. -adrenoceptor stimulation caused constriction of arteriovenous connections and of efferent lamellar arterioles, and enhanced oxygenation of the perfusion fluid. -adrenoceptor stimulation also increased O 2 transfer, but to a lesser extent. It is suggested that both hypoxia and -adrenoceptor stimulation improved O 2 transfer via constriction of efferent lamellar arterioles. Both stimuli may also increase systemic blood flow by constriction of the arterio-venous connections, although such an effect of hypoxia has not been clearly shown. -stimulation probably increased O 2 transfer by dilation of afferent lamellar arterioles, thereby causing recruitment of unperfused lamellae. Text Gadus morhua HighWire Press (Stanford University) |
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HighWire Press (Stanford University) |
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English |
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Journal Articles |
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Journal Articles PETTERSSON, KNUT Adrenergic Control of Oxygen Transfer in Perfused Gills of the Cod, Gadus Morhua |
topic_facet |
Journal Articles |
description |
A perfused and ventilated gill preparation is described in which the pO 2 of the perfusion medium and the irrigating water is controlled. Dorsal aorta effluent pO 2 and flow were measured together with the branchial vascular resistance. Decreasing pO 2 in the perfusion fluid caused increased branchial vascular resistance, probably by constriction of efferent lamellar arterioles. -adrenoceptor stimulation caused constriction of arteriovenous connections and of efferent lamellar arterioles, and enhanced oxygenation of the perfusion fluid. -adrenoceptor stimulation also increased O 2 transfer, but to a lesser extent. It is suggested that both hypoxia and -adrenoceptor stimulation improved O 2 transfer via constriction of efferent lamellar arterioles. Both stimuli may also increase systemic blood flow by constriction of the arterio-venous connections, although such an effect of hypoxia has not been clearly shown. -stimulation probably increased O 2 transfer by dilation of afferent lamellar arterioles, thereby causing recruitment of unperfused lamellae. |
format |
Text |
author |
PETTERSSON, KNUT |
author_facet |
PETTERSSON, KNUT |
author_sort |
PETTERSSON, KNUT |
title |
Adrenergic Control of Oxygen Transfer in Perfused Gills of the Cod, Gadus Morhua |
title_short |
Adrenergic Control of Oxygen Transfer in Perfused Gills of the Cod, Gadus Morhua |
title_full |
Adrenergic Control of Oxygen Transfer in Perfused Gills of the Cod, Gadus Morhua |
title_fullStr |
Adrenergic Control of Oxygen Transfer in Perfused Gills of the Cod, Gadus Morhua |
title_full_unstemmed |
Adrenergic Control of Oxygen Transfer in Perfused Gills of the Cod, Gadus Morhua |
title_sort |
adrenergic control of oxygen transfer in perfused gills of the cod, gadus morhua |
publisher |
Company of Biologists |
publishDate |
1983 |
url |
http://jeb.biologists.org/cgi/content/short/102/1/327 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://jeb.biologists.org/cgi/content/short/102/1/327 |
op_rights |
Copyright (C) 1983, Company of Biologists |
_version_ |
1766005424692133888 |