一、正常心肌代谢Ⅰ心肌代谢(一)心肌能量来源及其需要量:由一系列的现代技术资料证明,人的心脏活动能量的需要量比横纹肌、平滑肌均要大,血流量及耗氧量也都要大。人心脏重量占全身的0.5％,血流量占全身5％,氧耗量占全身9—10％,每克心肌每次活动周期中 ATP 分解量为5×10~(-7)克分子,ATP 是心肌收缩的能 First, the normal myocardial metabolism Ⅰ myocardial metabolism (a) myocardial energy sources and their needs: a series of modern technical data show that the human heart activity energy requirements than striated muscle, smooth muscle, blood flow and oxygen consumption Also big. Human heart weight accounted for 0.5% of the body, blood flow accounted for 5% of the body, oxygen consumption accounted for 9-10% of the whole body, per gram of myocardial ATP activity per cycle decomposition of 5 × 10 -7 molecules, ATP Is the ability of myocardial contraction