Passive viscoelastic properties of the rabbit aorta in vitro.
Tensile tests on longitudinal and circumferential strips of the rabbit aorta have been performed. Stress-strain and relaxation parameters have been estimated with respect to four stress levels and three positions on the aorta. Stress-strain data indicate that in longitudinal direction the aorta becomes more compliant with distance from the aortic arch. The opposite tendency is found for the circumferential direction. Stress-relaxation is found to be strongly dependent on the stress level. The results are discussed with regard to arterial dynamics.
Gallasch
E
E
Institute of Physiology, University of Graz, Austria.
Weizäcker
H W
HW
D000818:Animals; D001011:Aorta / Q000502:physiology; D004548:Elasticity; D008297:Male; D009131:Muscle, Smooth, Vascular / Q000502:physiology*; D011817:Rabbits; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D012984:Software; D014655:Vascular Resistance / Q000502:physiology*