Left upper lobe bronchus
Dr Phillip Marsh and Dr James Ling et al.
The left main bronchus divides into the left upper lobe bronchus and the left lower lobe bronchus. It is one of the secondary lobar bronchi.
Gross Anatomy
The left upper lobe bronchus is very short and divides immediately into the segmental bronchi. There are usually 10 individual segmental bronchi for each lung, however, the left lung can have segmental bronchi which share a common stem 1.
The left upper lobe segmental bronchi are 1:
- apicoposterior (common stem of apical and posterior)
- anterior
- superior lingular
- inferior lingular
Blood Supply
- they are supplied by the superior left bronchial artery 2
- the venous return from the left upper lobe bronchus drain to the accessory hemiazygos vein 2
Related Radiopaedia articles
Anatomy: Thoracic
- thoracic skeleton
- thoracic cage
- thoracic spine
- articulations
- muscles of the thorax
- diaphragm
- intercostal space
- intercostal muscles
- variant anatomy
- spaces of the thorax
- thoracic viscera
- tracheobronchial tree
-
lungs
-
bronchopulmonary segmental anatomy (Boyden Classification) (mnemonic)
- left lung
- right lung
- variant anatomy
- lung parenchyma
- hilum
- pleura
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bronchopulmonary segmental anatomy (Boyden Classification) (mnemonic)
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heart
- cardiac chambers
- heart valves
- pectinate muscles
- cardiac fibrous skeleton
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coronary arteries
- coronary arterial dominance
- myocardial segments
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left main coronary artery (LMCA)
- ramus intermedius artery (RI)
-
circumflex artery (LCx)
- obtuse marginal branches (OM1, OM2, etc))
- Kugel's artery
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left anterior descending artery (LAD)
- diagonal branches (D1, D2, etc)
- septal perforators (S1, S2, etc)
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right coronary artery (RCA)
- conus artery
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- inferior interventricular artery (PDA)
- posterior left ventricular artery (PLV)
- congenital anomalies
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- fetal circulation
- atrial septum
- endocardium
- myocardium
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pericardium
- epicardium
- epicardial fat pad
- pericardial space
- oblique pericardial sinus
- transverse pericardial sinus
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pericardial recesses
- aortic recesses
- pulmonic recesses
- postcaval recess
- pulmonary venous recesses
- pericardial ligaments
- esophagus
- thymus
- breast
- blood supply of the thorax
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- superior vena cava (SVC)
- inferior vena cava (IVC)
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coronary veins
- cardiac veins which drain into the coronary sinus
- great cardiac vein
- middle cardiac vein
- small cardiac vein
- posterior vein of the left ventricle
- vein of Marshall (oblique vein of the left atrium)
- anterior cardiac veins
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- cardiac veins which drain into the coronary sinus
- pulmonary veins
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