一.心脏的兴奋传导系统心脏的兴奋传导系统包括窦房结、结间束(分前结间束、中结间束及后结间束)、房室结、房室束,左右束支及浦氏纤维。房室束在穿室间隔时分为左、右束支,左束支又分为左前分支、左后分支及室间隔支。心脏的正常起搏点为窦房结,窦房结规律地发放出冲动,通过窦房间传导组织及结间束,依次将冲动 Excited conduction system of the heart Excitement of the heart conduction system, including the sinus node, the junction between the beam (points before the end of the beam, the junction between the beam and the posterior junction bundle), atrioventricular node, atrioventricular bundle, left and right bundle branch and Pu’s fiber. Atrioventricular bundle in the interventricular septum is divided into left and right bundle branch, left bundle branch is divided into left anterior branch, left posterior branch and ventricular septal branch. The normal pacemaker point of the heart is the sinus node, and the sinus node regularly distributes the impulse. Through the sinus room, the conduction tissue and the intercostal bundle are sequentially impulsed