Question

fill in the blank question
the vessel of the pulmonary circuit marked with the letter a is the right
artery.

Explanation:

In the pulmonary circuit, the right pulmonary artery carries deoxygenated blood from the heart to the right lung. The vessel marked A in the diagram (connected to the right lung) is the right pulmonary artery, so the blank should be filled with "pulmonary".

Answer:

pulmonary