You didn't finish your question so we don't know what you're asking. Surround what?
alveoli
bronchus
Aveoli
the blood surround Alveoli in order to gas exchange between the Alveoli and red blood cell.
Capillaries
Alveoli
alveoli
Bronchiloles are not surrounded by the blood capillaries. But then the bronchioles have got their own blood supply.
The alveoli are surrounded by capillaries that carry carbon dioxide laden blood from the body and return oxygenated blood back to the body.
the plomonary vien
Alveoli.
The glomerulus is the cluster of capillaries surrounded by Bowman's capsule.
Alveoli which are in your lungs
The lungs contain air sacs called alveoli which are surrounded by blood capillaries to allow gaseous exchange.
The alveoli consist of an epithelial layer and extracellular matrix surrounded by capillaries.