[The effect of activity of smooth muscles on the relationship of circumferential stress-strain of superior mesenteric veins in rabbits].
The superior mesenteric veins (SMV) of 14 rabbits were divided into two groups for experiment of inflation pressure, namely the normal group and the inactivated smooth muscles group. The results showed that the relationship of circumferential stress-strain of SMV could be expressed with the exponential equation. Constant X2 is effected by the active condition of smooth muscles. The difference of the material constant X2 between the two groups was statistically significant (P < 0.05), but the difference of the material constant X1 between the two groups was not statistically significant (P > 0.05). These suggest that X2 is the parameter concerning the activity of smooth muscles.
Cheng
H
H
Biomechanical Laboratory, Department of Rehabilitation Medicine, Southwest Hospital, Third Military Medical University, Chongqing 400038.
Liu
Z
Z
Zou
Z
Z
D000818:Animals; D005260:Female; D066298:In Vitro Techniques; D008297:Male; D008642:Mesenteric Veins / Q000033:anatomy & histology / Q000502:physiology*; D009119:Muscle Contraction; D009131:Muscle, Smooth, Vascular / Q000502:physiology*; D011817:Rabbits; D013314:Stress, Mechanical