Final answer:
The blood supply of the lungs involves the pulmonary circulation, where deoxygenated blood is carried by the pulmonary artery and oxygenated blood is drained by pulmonary veins.
Step-by-step explanation:
The blood supply of the lungs involves the pulmonary circulation, which plays a crucial role in gas exchange and oxygenating blood.
Deoxygenated, arterial blood is carried to the lungs by the pulmonary artery, which branches multiple times before reaching the alveoli.
Once in the alveoli, the blood is oxygenated and drained by multiple pulmonary veins, which exit the lungs through the hilum.