Topics | Heart and Circulatory System | What does the right coronary artery do? The coronary arteries supply blood to the heart muscle itself. The right coronary artery is the major artery that supplies blood to the upper and lower chambers on the right side of the heart. There is also a left coronary artery. Watch this animation to learn more about these arteries.
Definition of impugn. 1  transitive verb. 2  1 : to assail by words or arguments : oppose or attack as false or lacking integrity impugned the defendant's character. 3  2 obsolete a : assailb : resist.
Example Sentences for impugn. 1  No one, I think, will venture to impugn the motives or the purity of the intentions of Miss Heald in taking this step. 2  Not being able to impugn her beauty, they attacked her costume. 3  We take refuge in a grievance rather than impugn the supremacy of our ego.