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一、线性弹性腔理论和非线性弹性腔理论左心室收缩时放出的能量,一部分作为动能推动血液前进,在血液流动时因摩擦生热而耗去,一部分变为势能(也就是所谓压强能)贮存于动脉的弹性纤维内。左心室舒张时主动脉壁发生弹性回缩,贮存于弹力纤维内的势能转变为动能推动血液继续向前流动。为了有可能对动脉中的血流进行定量的描述,1899年Frank氏〔1〕建立了关于人体体循环动脉系统的弹性腔(Elastio Chamber)理论。此理论假定主动脉为一弹性腔(见图1),将心泵、主动脉、小动脉和毛细血管比拟为往复泵-空气腔-终端阻力的简化模型,称为弹性腔模
First, the linear elastic cavity theory and nonlinear elastic cavity Theory of ventricular systolic left ventricular release of energy, some as kinetic energy to promote blood flow in the blood flow due to friction and heat consumption, part of the potential energy (that is, the so-called pressure energy) Stored in the elastic fibers of arteries. When the left ventricular diastolic elastic contraction of the aortic wall, stored in the elastic fiber potential energy into kinetic energy to promote blood flow forward. In order to have a quantitative description of the blood flow in arteries, Frank’s [1] established the Elastio Chamber theory of the circulatory system of the human body in 1899. This theory assumes that the aorta is an elastic cavity (see Figure 1). Comparing the heart pump, aorta, arterioles, and capillaries to a simplified model of the reciprocating pump-air cavity-terminal resistance is called the elastic cavity mode