...Paul J. Ponganis; Cassondra L. Williams; Jessica M. Kendall-Bar ABSTRACT Oxygen store management underlies dive performance and is dependent on the slow heart rate and peripheral vasoconstriction of the dive response to control tissue blood flow and oxygen uptake. Prior research has revealed two...

... ) and are believed to reflect peripheral vasoconstriction, reducing the temperature gradient between the periphery and the environment and, thereby, heat loss. The effectiveness of such a response has been demonstrated experimentally in marine mammals (e.g. Kvadsheim and Folkow, 1997 ). It is conceivable...

... 1999 by Company of Biologists 1999 bosentan cod Gadus morhua endothelin gill respiration secondary lamella vasoconstriction The primary site for oxygen uptake in fish, the gill lamella, can be described as a blood-filled pillared hall, in which epithelial cells form the roof...

... adrenergic mechanisms because increases in pressure in response to ANG infusion were unaffected by the presence of the alpha antagonist phentolamine. Angiotensin-induced vasoconstriction was shown to be an important mechanism in arterial blood pressure regulation in the face of an acute hypotensive...