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

According to most sources, there is no middle lobe in the left lung as there is in the right lung. However, the term lingula is used to denote a projection of the upper lobe of the left lung that serves as the homologue, and some sources define this 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.

[edit] Additional images

Anatomy of lungs.

[edit] External links

• Lung Lobes
• lingula+of+left+lung at eMedicine Dictionary
• 705036347 at GPnotebook
• SUNY Labs 19:13-0103 - "Pleural Cavities and Lungs: Lobes and Fissures of the Lungs"
• SUNY Labs 19:16-0203 - "Pleural Cavities and Lungs: Bronchopulmonary Segments"