Answer:
Right pulmonary artery
Step-by-step explanation:
Based on the scenario being described within the question it can be said that the structure being described is known as the Right pulmonary artery. This is the longer and also the larger of the two arteries that conveys venous blood from the heart to the lungs. This artery is roughly 3 cm in diameter and 5 cm in length, and it's main function is delivering oxygen-depleted blood to it's corresponding lung.