论文部分内容阅读
一.冠状动脉分布1.左冠状动脉左冠状动脉起自主动脉左后窦,主干长0.5—1.0厘米,行经肺动脉与左心耳之间,分为前降支和左旋支。(1)前降支:在前室间沟内下行,绕过心尖至后室间沟上行,常终止于后室间沟的下1/3处。前降支主要供应左心室前壁、室间隔前三分之二部分,右心室前壁及心尖等处。(2)左旋支:在左心耳下方的冠状沟内走行,
1. Coronary distribution 1. Left coronary artery left coronary artery from the left posterior sinus, trunk length 0.5-1.0 cm, passing through the pulmonary artery and left atrial appendage, divided into anterior descending and left circumflex. (1) anterior descending branch: In the anterior chamber ditch down, around the apex to the posterior chamber ditch upstream, often ending in the posterior chamber ditch 1/3. Anterior descending artery mainly supplies the anterior wall of the left ventricle, the first two thirds of the interventricular septum, the anterior wall of the right ventricle and the apical portion. (2) left-sided branch: walking in the coronary sulcus below the left atrial appendage,