Each alveolus is surrounded by a web of blood capillaries supplied by the _________.
A) aorta
B) pulmonary artery
C) pulmonary vein
D) inferior vena cava
E) superior vena cava

Question

Quizplus · Accepted Answer

The pulmonary artery carries deoxygenated blood to the lungs, where it branches into smaller arteries and eventually into capillaries surrounding the alveoli. This allows for the exchange of oxygen and carbon dioxide between the lungs and blood.

Each Alveolus Is Surrounded by a Web of Blood Capillaries