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Encyclopedia > 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
MeSH Pulmonary+Artery

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. Image File history File links Diagram_of_the_human_heart_(cropped). ... A diagram of the alveoli, both in cross section and externally. ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... The right ventricle is one of four chambers (two atria and two ventricles) in the human heart. ... The pulmonary veins carry oxygen-rich blood from the lungs to the left atrium of the heart. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... Human blood smear: a - erythrocytes; b - neutrophil; c - eosinophil; d - lymphocyte. ... The heart and lungs, from an older edition of Grays Anatomy. ... The heart and lungs (from an older edition of Grays Anatomy) The lung is an organ belonging to the respiratory system and interfacing to the circulatory system of air-breathing vertebrates. ... Section of an artery For other uses, see Artery (disambiguation). ... Umbilical arteries carry deoxygenated blood from the fetus to the placenta in the umbilical cord. ...


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. The heart and lungs, from an older edition of Grays Anatomy. ... The right ventricle is one of four chambers (two atria and two ventricles) in the human heart. ... Human respiratory system The lungs flank the heart and great vessels in the chest cavity. ...

Contents

Role in disease

Pulmonary hypertension occurs alone and as a consequence of a number of lung diseases. It can 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. In medicine, pulmonary hypertension (PH) is an increase in blood pressure in the pulmonary artery or lung vasculature, leading to shortness of breath, dizziness, fainting, and other symptoms, all of which are exacerbated by exertion. ... In medicine, pulmonology (aka pneumology) is the specialty that deals with diseases of the lungs and the respiratory tract. ... •Coronary heart disease, a disease of the heart itself caused by the accumulation of atheromatous plaques within the walls of the arteries that supply the myocardium. ... Eisenmengers syndrome or Eisenmengers reaction is defined as the process in which a left-to-right shunt in the heart causes increased flow through the pulmonary vasculature, causing pulmonary hypertension, which in turn, causes increased pressures in the right side of the heart and reversal of the shunt... Scleroderma is a rare, chronic disease characterized by excessive deposits of collagen in the skin or other organs. ...


Additional images

See also

Chronic obstructive pulmonary disease (COPD) is an umbrella term for a group of respiratory tract diseases that are characterised by airflow obstruction or limitation. ... In medicine, pulmonary hypertension (PH) is an increase in blood pressure in the pulmonary artery or lung vasculature, leading to shortness of breath, dizziness, fainting, and other symptoms, all of which are exacerbated by exertion. ... Thrombosis is the formation of a clot or thrombus inside a blood vessel, obstructing the flow of blood through the circulatory system. ... Pulmonary circulation is the portion of the cardiovascular system which carries oxygen-depleted blood away from the heart, to the lungs, and returns oxygenated blood back to the heart. ... Rasmussens aneurysm is a pulmonary artery aneurysm adjacent or within a tuberculous cavity. ...

External links


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