Left Pulmonary Artery

The left pulmonary artery or left branch of the pulmonary artery, shorter and somewhat smaller than the right, passes horizontally in front of the descending aorta and left bronchus to the root of the left lung, where it divides into two branches, one for each lobe of the lung.

Above, it is connected to the concavity of the aortic arch by the ligamentum arteriosum, on the left of which is the left recurrent nerve, and on the right the superficial part of the cardiac plexus. Below, it is joined to the upper left pulmonary vein by the ligament of the left vena cava.

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

List of arteries of torso · chest (TA A12.2.01–04,11, GA 6.598)
Pulmonary
Coronary
  • Right coronary: SA nodal
  • AV nodal
  • Atrial
  • Right marginal
  • Posterior interventricular

Left coronary: Anterior interventricular

  • Left circumflex (Left marginal)
Ascending aorta/
aortic arch
Brachiocephalic
  • Thyreoidea ima
  • Right subclavian
  • Right common carotid
Left common carotid
  • External carotid
  • Internal carotid
  • Carotid body
  • Carotid sinus
  • Carotid bifurcation
Left subclavian
  • Internal thoracic: Anterior intercostal
  • Thymic
  • Pericardiacophrenic
  • Perforating branches
  • terminal (Musculophrenic, superior epigastric)
  • Kacheshmarova's artery (Arteria xiphia (Arteria africana))
  • Costocervical trunk: Highest intercostal (Posterior intercostal 1–2)
  • Deep cervical
Other
  • Aortic body
Descending/
thoracic aorta
  • visceral: Bronchial
  • Esophageal
  • Mediastinal
  • parietal: Posterior intercostal 3·11
  • Subcostal
  • Superior phrenic

M: VAS

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