Smooth muscle contraction and viscoelasticity of arterial wall.
Smooth muscle contraction and viscoelasticity of arterial wall.
复制标题
平滑肌收缩和动脉壁粘弹性。
DOI：
10.1139/y70-079
复制
发表时间：
1970
影响因子：
2.1
通讯作者：
J. McCook
中科院分区：
文献类型：
--
作者：
M. Wurzel;G. Cowper;J. McCook
在悬浮于林格溶液中的螺旋切割的兔主动脉条上测量完全松弛和逐渐收缩的动脉壁的弹性和粘度。经受额外拉伸的预拉伸收缩组织显示瞬时和缓慢伸长。在完全松弛的组织上仅观察到瞬时伸长。这种行为可以通过机械模型来模拟，该模型由与缓冲器串联的弹簧和与第一个弹簧缓冲器组件并联的第二个弹簧组成。第一弹簧的模量和粘度系数都随着收缩的增加而稳定增加，而第二弹簧的模量则减小。第一个弹簧缓冲器组件被认为代表了平滑肌在其非收缩网络上的粘弹性行为。第二个弹簧可能代表了动脉弹性蛋白和胶原蛋白的综合弹性特性。
Elasticity and viscosity, of fully relaxed and gradedly contracted arterial wall, were measured on spirally cut rabbit aortic strips suspended in Ringer's solution. Pre-extended contracted tissue submitted to additional stretch shows an instantaneous and a slow elongation. Only instantaneous elongation was observed on fully relaxed tissue. This behavior can be simulated by a mechanical model consisting of a spring in series with a dashpot, and a second spring in parallel with the first spring–dashpot component. The modulus of the first spring and the coefficient of viscosity both increase steadily with increasing contraction, while the modulus of the second spring decreases. The first spring–dashpot component is believed to represent the viscoelastic behavior of smooth muscle on its non-contractile network. The second spring probably represents the combined elastic properties of arterial elastin and collagen.