You didn't finish your question so we don't know what you're asking. Surround what?
the blood surround Alveoli in order to gas exchange between the Alveoli and red blood cell.
Capillaries
Alveoli
Alveoli.
Blood capillaries are surrounded by a layer called the basement membrane, which provides structural support and acts as a barrier between the capillaries and surrounding tissues. Pericytes, contractile cells that regulate blood flow and vessel stability, may also be found surrounding blood capillaries.
Each alveolar sac is surrounded by a network of capillaries that facilitate the exchange of gases (oxygen and carbon dioxide) between the air in the sac and the bloodstream. This close proximity allows for efficient gas exchange in the lungs.
The glomerulus is the cluster of capillaries surrounded by Bowman's capsule.
No, bronchioles are part of the respiratory system and are not surrounded by blood capillaries. Bronchioles are airways within the lungs that help transport air to the alveoli for gas exchange. Blood capillaries are located near the alveoli for the exchange of oxygen and carbon dioxide.
Alveoli which are in your lungs
The lungs contain air sacs called alveoli which are surrounded by blood capillaries to allow gaseous exchange.
Alveoli which are in your lungs
The alveoli consist of an epithelial layer and extracellular matrix surrounded by capillaries.