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一、冠状动脉的解剖与临床冠状动脉分左、右两主干,分别发自左、右主动脉窦(或称冠状动脉窦)。 (一)左冠状动脉左冠状动脉管径较右侧者稍粗,起始部称主干,长约1—3厘米。它经肺动脉的起始部与左心耳之间,沿房室沟向左前移行1—2厘米即分为前降支与左旋支。前降支呈轻度 S 状走行于心脏的前纵沟,止于心尖部。它又分为:①左心室前支(约11支),供
First, the anatomy of coronary arteries and clinical coronary artery points left and right two main stem, respectively, from the left and right aortic sinus (or coronary sinus). (A) left coronary artery diameter is slightly thicker than the right side of the beginning, said the main stem, about 1-3 cm long. It passes between the beginning of the pulmonary artery and the left atrial appendage, along the atrioventricular groove to the left before the line 1-2 cm that is divided into anterior descending and left circumflex. Anterior descending branch was mild S-shaped walking in the heart of the longitudinal groove, ending in the apex. It is divided into: ① left ventricular anterior branch (about 11), for