左室功能在于节律性收缩将血液泵入主动脉以维持体循环中的正常血流量与血压。左室本身则由较厚的环行肌壁及其围成的内腔组成,形如一个厚壁的圆锥臼状,可分一口三壁。上口的右1/3周由室间隔上缘组成,左2/3周由位于房室沟深处的二尖瓣后环组成。三壁为相互连续成一个完整体的三部分,包括:(1)室间隔壁,为左室与右室 Left ventricular function is the rhythmic contraction of blood pumping into the aorta to maintain normal circulation in the systemic circulation and blood pressure. The left ventricle itself consists of a thick circular muscle wall and the cavity formed around it, shaped like a thick-walled conical mortar, can be divided into three mouth. The upper right 1/3 of the upper margin of the interventricular septum, left 2/3 weeks by the atrioventricular groove located in the depth of the mitral valve posterior ring. The three walls are continuous with each other into a complete body of three parts, including: (1) interventricular septum, the left ventricle and the right ventricle