正常冠状动脉横切面

图示：正常冠状动脉。腔较大，不伴有动脉粥样硬化斑块引起的管腔狭窄。动脉肌层的厚度适中。

This is a normal coronary artery. The lumen is large, without any narrowing by atheromatous plaque. The muscular arterial wall is of normal proportion.