- Pulmonary artery
Artery: Pulmonary artery Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow. (Pulmonary artery labeled at upper right.) Diagram of the alveoli with both cross-section and external view. Latin truncus pulmonalis, arteria pulmonalis Gray's subject #141 543 Source right ventricle Vein pulmonary vein Precursor truncus arteriosus MeSH Pulmonary+Artery
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 de-oxygenated blood to the corresponding lung.
In contrast to the pulmonary arteries, the bronchial arteries supply mainly nutrition to the lungs themselves.
Role in disease
Pulmonary hypertension occurs alone and as a consequence of a number of lung diseases. It can also be a consequence of heart disease (Eisenmenger's syndrome) but equally a cause (right-ventricular heart failure); it also occurs as a consequence of pulmonary embolism and scleroderma. It is characterised by reduced exercise tolerance. Severe forms, generally, have a dismal prognosis.
- Chronic obstructive lung disease
- Pulmonary hypertension
- Thromboembolic disease
- Pulmonary circulation
- Rasmussen's aneurysm
- 53805116 at GPnotebook
- pulmonary+trunk at eMedicine Dictionary
- SUNY Labs 20:01-0106 - "Heart: The Pericardial sac and Great vessels"
- SUNY Labs 20:07-0105 - "Heart: Openings of Great Vessels into the Pericardial Sac"
- SUNY Figs 19:05-06 - "Mediastinal surface of the right lung."
- SUNY Figs 19:06-02 - "Mediastinal surface of the left lung."
- Histology at BU 13802loa
Circulatory system: Arteries and veins (TA A12.0, TH H3.09.02, GA 6.543/GA 7.641) Systemic circulation Pulmonary circulation Blood vessels Arteries Veins Lymphatic List of arteries of torso · chest (TA A12.2.01–04,11, GA 6.598) PulmonaryRight pulmonary artery · Left pulmonary artery (Ligamentum arteriosum) Coronary Ascending aorta/
Wikimedia Foundation. 2010.