Hemodynamics in the pink abalone, Haliotis corrugata (mollusca, gastropoda). II. Acute blood‐flow measurements and their relationship to blood pressure

Abstract

In the pink abalone, Haliotis corrugata, pulsatile flow and pulsatile pressure were measured at 15°C by electromagnetic and Doppler ultrasonic flowmeters and strain gauge manometers. Flow was pulsatile in all areas of the arterial system investigated, i.e., the aorta, the cephalic arterial sinus and pedal arteries. Flow rates of approximately 2.9 ml/min were measured in the aorta of animals after surgical implantation of electromagnetic flowprobes. The events of the cardiac cycle are correlated with aortic blood flow. Simultaneous recording of pressure and flow suggested that the action of the aortic bulb maintained aortic flow during ventricular diastole.