Question

77 of 88 concepts completed
multiple choice question
which vessel of the pulmonary circuit is labeled d in this picture?
middle lobar artery
right pulmonary artery
superior lobar artery
inferior lobar artery
pulmonary trunk

Explanation:

To determine the vessel labeled D, we analyze the pulmonary circuit anatomy. The right pulmonary artery supplies the right lung, and the labeled D is a vessel branching to the left lung? Wait, no—wait, the left lung's arterial supply: the left pulmonary artery has lobar arteries. Wait, the options: Middle lobar artery (right lung has middle lobe), Right pulmonary artery (goes to right lung), Superior lobar artery (left lung has superior lobe). Wait, the diagram shows D pointing to a vessel in the left lung's upper (superior) region. The superior lobar artery is a branch of the left pulmonary artery supplying the superior lobe of the left lung. So the correct option is the Superior lobar artery.

Answer:

C. Superior lobar artery (assuming options are labeled A - E, but here the third option is Superior lobar artery: "○ Superior lobar artery" is the correct choice. So the answer is the option with "Superior lobar artery".