... NMR oxygen hemodynamics The prolonged breath holds (apneas) of seals during sleep represent a model in which to examine the interplay of vascular O 2 delivery, the MbO 2 (oxymyoglobin) store and cellular metabolic responses during progressive hypoxemia and muscle ischemia...

... peristaltically rear-to-front(`peristaltic heart'), followed by nearly synchronous front-to-rear constrictions in the contralateral heart segments (`synchronous heart'). Using optical recordings from intact leeches, we now characterize the hemodynamic properties of the cardiac cycle of individual heart segments...

... 2005 © The Company of Biologists Limited 2005 2005 exercise hemodynamics intra-abdominal pressure locomotion oxygen consumption reptile venous return ventilation central venous pressure heart rate Recent studies have demonstrated that limitations to oxygen transport...

... porosus. J. Exp. Biol. 201 , 2235 -2242. Amoore, J. and Santamore, W. ( 1994 ). Venous collapse and the respiratory variability in systemic venous return. Cardiovasc. Res. 28 , 472 -479. Badeer, H. and Hicks, J. ( 1992 ). Hemodynamics of vascular `waterfall': is the analogy justified...

... with a microclip. Clipping alters venous return and intracardiac laminar blood flow patterns,with secondary effects on the mechanical load of the embryonic myocardium. We investigated the instantaneous effects of clipping the right lateral vitelline vein on hemodynamics in the stage-17 chick embryo. 32 chick...