心脏是一个不停地运动的器官,它跳动一次可以向外输送约60毫升的血液。有人推算,如果一个健康人活到70岁,心脏以每分钟跳动72次计算,它一生要跳动26亿次。因为心脏长期不停地运动,所以心脏会优先得到血和氧的供给。按照一般细胞的生长规律,心脏细胞在优越的营养条件下,自我更新繁殖的能力应该特别强,但奇怪的是心脏并不如此,它在胚胎发育完毕后,便失去了增殖能力,即使心脏细胞 The heart is a constantly moving organ that beats once to deliver about 60 ml of blood out. Someone has calculated that if a healthy person lived to be seventy and his heart beats 72 beats per minute, it had to beat 2.6 billion times in a lifetime. Because the heart long-term non-stop movement, so the heart will give priority to the supply of blood and oxygen. In accordance with the general law of cell growth, cardiac cells in superior nutritional conditions, the ability to self-renewal reproduction should be particularly strong, but it is strange that the heart is not the case, it is in the embryonic development is completed, they lose the ability to proliferate, even if the heart cells