Right pulmonary artery

Arteria pulmonalis dextra

CardiovascularBlood vesselsThoraxRight side

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What it is
The longer branch: runs horizontally to the right beneath the aortic arch, behind the ascending aorta and superior vena cava and in front of the right main bronchus, into the hilum of the right lung.
Function
Carries deoxygenated blood to the three lobes of the right lung.
Size
~5 cm long, 2–2.5 cm diameter.
Clinical note
Divides at the hilum into a truncus anterior for the upper lobe and an interlobar artery for the middle and lower lobes.

Nearby cardiovascular structures Aortic arch, Aortic valve, Ascending aorta, Left pulmonary artery, Pulmonary trunk, Pulmonary valve, Right inferior pulmonary vein, Right superior pulmonary vein, Sinoatrial (SA) node, Superior vena cava