The pulmonary artery (centre of figure, blue), thoracic aorta, heart and other great vessels.
|- style="text-align: center;" class="hiddenStructure"
| colspan="2" |
|- style="text-align: center; line-height: 1;" class="hiddenStructure"
| colspan="2" |Diagram of the alveoli with both cross-section and external view.
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|Latin
|colspan="2"|
|- class="hiddenStructure"
|[[List of subjects in Gray's Anatomy:141#Gray.27s_page_.23|Gray's]]
|colspan="2"|[subject #141 ]
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|Supplies
|colspan="2"|
|- class="hiddenStructure"
|From
|colspan="2"|right ventricle
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|To
|colspan="2"|
|- class="hiddenStructure"
|Vein
|colspan="2"|pulmonary vein
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|MeSH
|colspan="2"|[A07.231.114.715]
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|Dorlands/Elsevier
|colspan="2"|[/]
|}
The pulmonary arteries carry blood from the heart to the lungs. They are the only arteries (other than umbilical arteries in the fetus) that carry deoxygenated blood.
In the human heart, the pulmonary trunk (pulmonary artery or main pulmonary artery) begins at the base of the right ventricle. It is short and wide - approximately 5 cm (2 inches) in length and 3 cm (1.2 inches) in diameter. It then branches into two pulmonary arteries (left and right), which deliver deoxygenated blood to the corresponding lung.
