left pulmonary artery

(redirected from arteria segmentalis medialis pulmonis dextri et sinistri)

left pul·mo·nar·y ar·ter·y

[TA]
the shorter of the two terminal branches of the pulmonary trunk, it pierces the pericardium to enter the hilum of the left lung. Branches ramify and are distributed with the segmental and subsegmental bronchi; frequent variations occur. Typical branches: of the superior lobar arteries [TA] (arteriae lobares superiores pulmonis , under arteria [TA]) are the apical segmental artery [TA] (arteria segmentalis apicalis (dextri et sinistri) [TA]), anterior segmental artery [TA] (arteria segmentalis anterior pulmonis (dextri et sinistri) [TA]), and posterior segmental artery [TA] (arteria segmentalis posterior pulmonis (dextri et sinistri) [TA]), with the latter two having ascending and descending branches [TA] (rami ascendens et descendens [TA]); of the lingular artery [TA] (arteria lingularis [TA]) are the superior lingular artery [TA] (arteria lingularis superior [TA]) and inferior lingular artery [TA] (arteria lingularis inferior [TA]); and of the inferior lobar arteries [TA] (arteriae lobares inferiores pulmonis , under arteria [TA]) are the superior segmental artery [TA] (arteria segmentalis superior pulmonis (dextri et sinistri) [TA]) and a basal part [TA] (pars basalis [TA]) giving rise to anterior, posterior, lateral, and medial basal segmental arteries [TA] (arteriae segmentales basales anterior, posterior, lateralis et medialis [TA]).
Synonym(s): arteria pulmonalis sinistra [TA]

left pulmonary artery

the shorter and smaller of two arteries conveying venous blood from the heart to the lungs, rising from the pulmonary trunk, connecting to the left lung, and tending to have more separate branches than the right pulmonary artery. In the fetus, it is larger and more important than the right pulmonary artery because it provides the ductus arteriosus that degenerates to become a ligament after birth. Compare right pulmonary artery.

left pul·mo·nar·y ar·te·ry

(left pul'mŏ-nar-ē ahr'tĕr-ē) [TA]
The shorter of the two terminal branches of the pulmonary trunk, it pierces the pericardium to enter the hilum of the left lung. Its branches accompany the segmental and subsegmental bronchi. Branches to the superior lobe (rami lobi superioris [TA]) are apical (ramus apicalis [TA]), anterior ascending (ramus anterior ascendens [TA]), anterior descending (ramus anterior descendens [TA]), posterior (ramus posterior [TA]), and lingular (ramus lingularis [TA]), the last having inferior and superior branches (rami lingulares inferior et superior [TA]). Branches to the inferior lobe (rami lobi inferioris [TA]) are the superior branch of the inferior lobe (ramus superior lobi inferioris [TA]) and the medial (medialis), anterior, lateral (lateralis), and posterior basal branches (rami basales [TA]).
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