[Length-force relation of rat-carotid artery at different transmural pression. Experiments and models (author's transl)].
The relation between force and extension in longitudinal direction as a function of the internal pressure was examined in isolated carotid arteries of rats using a device for testing the stress-strain relation of fibers (Vibrodyn). In the region of small longitudinal extensions the longitudinal force is decreased by raising the internal pressure. The longitudinal force is increased as a function of the internal pressure in the region of high longitudinal extensions. This behaviour can be explained by a model of the arterial wall which takes into account the spiral structure of the fibers. We could find a good qualitative agreement between this model and our experiments. It can be concluded that the histological structure plays an important role in determining the elastic behaviour of the arterial wall.
D000818:Animals; D001696:Biomechanical Phenomena; D001794:Blood Pressure; D002339:Carotid Arteries / Q000502:physiology*; D004548:Elasticity; D008297:Male; D008433:Mathematics; D008954:Models, Biological; D051381:Rats
Das Kraft-Dehnungs-Verhalten von Rattenkarotiden in Längsrichtung bei verschiedenem Innendruck und seine modellmässige Deutung.