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Lingula of left lung

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Title: Lingula of left lung  
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Subject: Lingula, Oblique fissure, Bronchopulmonary segment
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Lingula of left lung

Lingula of left lung
#1 - Anterior border of lung
#2 - Oblique fissure
#3 - Cardiac notch
#4 - Lingula of left lung
1. Oblique fissure
2. Vertebral part
3. Hilum of lung
4. Cardiac impression
5. Diaphragmatic surface

(Lingula not labeled, but is visible at bottom right.)
Latin lingula pulmonis sinistri

The human left lung, unlike the right, contains no middle lobe. However, the term lingula is used to denote a projection of the upper lobe of the left lung that serves as the homologue. Some sources define the lingula as a distinct lobe.

There are two bronchopulmonary segments of the lingula: Superior and inferior.

It is thought that the lingula of the left lobe is the remnant of the middle lobe of the left lung, which has been lost through evolution.


Lingula is Latin for "little tongue", giving the structure a common, humorous, nickname used in medical education: the "tongue in the lung".

Additional images

External links

  • Lung Lobes
  • eMedicine Dictionary
  • GPnotebook
  • 19:13-0103 - "Pleural Cavities and Lungs: Lobes and Fissures of the Lungs"
  • 19:16-0203 - "Pleural Cavities and Lungs: Bronchopulmonary Segments"

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