我叫心脏,像一个倒置的梨,悬在主人左胸部。因为我供应全身的血液,所以我很荣幸地成为主人最重要的器官之一。我每天都要跳动着来给其他器官、组织提供充足的血流量,以供应氧和各种营养物质,并带走代谢终产物,使细胞维持正常的代谢和功能。我的正常跳动是有规律的.跳动的节律叫心律,像钟摆一样“滴答滴答”。正常的心律频率为60～100次/分钟(成人)。如果我跳动的节律失去规律性,则称为心律失常。 My name is heart, like an inverted pear hanging on the owner’s left chest. Because I supply whole body blood, I am honored to be one of the most important organs of the owner. Every day, I beats to other organs and tissues to provide adequate blood flow to supply oxygen and various nutrients and to take away metabolic end products so that the cells maintain normal metabolism and function. My normal beating is regular. The beating rhythm is called rhythm, like a pendulum. “Ticking”. The normal heart rate is 60 to 100 beats / min (adults). If my beat rhythm loses regularity, it is called arrhythmia.