冠状动脉粥样硬化管腔狭窄横切面

冠状动脉粥样梗化使管腔狭窄，严重狭窄时由于缺血可致心绞痛甚至心肌梗死。

The coronary artery shown here has narrowing of the lumen due to build up of atherosclerotic plaque. Severe narrowing can lead to angina, ischemia, and infarction.