The capillaries that lie in close contact with alveoli are branches of what blood vessel?

Question

And this question please:
The confluence of these capillaries forms what blood vessel?

Thanks.

Answer 1

I guess I was thinking in a broader sense. The pulmonary arteries are the blood vessels that branch and branch, eventually forming the capillaries in the alveoli.

Likewise, the capillaries of the alveoli form larger and larger vessels until the blood returns to the heart in the pulmonary veins.

Answer 2

Alveolar artery.

that has its origin in the maxillary artery, is distributed through the mandibular canal to the lower teeth, and branches into the mylohyoid, mental, and dental arteries; inferior alveolar artery.