Biomaterial Database

The elastic properties of canine abdominal aorta at its branches. 1985

D M Touw, and M H Sherebrin, and M R Roach

The elastic properties of the abdominal aorta at regions of junctions were studied using strips from 17 dogs. Strips of tissue cut longitudinally and circumferentially at the celiac, mesenteric, and renal branches were used to compare the properties of the proximal and distal junctions, as well as the aorta and artery regions adjoining. The tissues were stored for at least 24 h to ensure that no active component of the smooth muscle remained. The elastic properties measured here are due to elastin and collagen, with a small contribution from dead smooth muscle cells. The tissue strips were tested at 20 degrees C while immersed in saline using an Instron tensile testing machine. Elongation of the three regions was measured from photographs taken as the tissue was stretched. Stress values went to 200 kN/m2 as the strain increased to approximately 0.8. (The physiological range for the dog was calculated as 40-85 kN/m2.) The distal junctional region was found to be the most extensible for both longitudinally and circumferentially oriented strips. These results have important implications for flow models as they imply that the shape of the junctional region probably changes between diastole and systole.

UI	MeSH Term	Description	Entries
D009131	Muscle, Smooth, Vascular	The nonstriated involuntary muscle tissue of blood vessels.	Vascular Smooth Muscle,Muscle, Vascular Smooth,Muscles, Vascular Smooth,Smooth Muscle, Vascular,Smooth Muscles, Vascular,Vascular Smooth Muscles
D004285	Dogs	The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)	Canis familiaris,Dog
D004548	Elasticity	Resistance and recovery from distortion of shape.
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001012	Aorta, Abdominal	The aorta from the DIAPHRAGM to the bifurcation into the right and left common iliac arteries.	Abdominal Aorta,Abdominal Aortas,Aortas, Abdominal
D012756	Sheep	Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS.	Ovis,Sheep, Dall,Dall Sheep,Ovis dalli
D066298	In Vitro Techniques	Methods to study reactions or processes taking place in an artificial environment outside the living organism.	In Vitro Test,In Vitro Testing,In Vitro Tests,In Vitro as Topic,In Vitro,In Vitro Technique,In Vitro Testings,Technique, In Vitro,Techniques, In Vitro,Test, In Vitro,Testing, In Vitro,Testings, In Vitro,Tests, In Vitro,Vitro Testing, In