Question

Which blood vessel lies in the coronary sulcus and supplies oxygenated blood to the walls of the right ventricle?

1) Coronary artery
2) Pulmonary artery
3) Aorta
4) Coronary vein

Answer 1

The right coronary artery, which lies in the coronary sulcus, supplies oxygenated blood to the walls of the right ventricle.

Step-by-step explanation:

This artery originates from the right anterior aortic sinus, just superior to the aortic semilunar valve, and proceeds along the coronary sulcus. It distributes blood to the right atrium, portions of both ventricles and the heart conduction system. The right coronary artery also gives rise to the marginal arteries, which supply blood to the superficial portions of the right ventricle, and the posterior interventricular artery, which supplies portions of both ventricles and the interventricular septum.