Sentence:  The coronary arteries were sclerotic and diffusely narrowed throughout their courses , and the <WSD>right</WSD> coronary artery was virtually occluded by a yellow atheromatous plaque 1.5 cm. distal to its origin . 
Meaning of the word marked with <WSD> tags:  arises from the right aortic sinus; supplies the right side of the heart