Lingula Diagram, Below the notch is the lingula of the left lung - a tongue-like projection of the left superior lobe. Characteristic features: This leaves an impression on the antero-inferior aspect of the superior lobe and also shapes a tongue-like process called the lingula. Next, there are the lung surfaces. The term "lingula" means "little tongue" in Latin, reflecting its tongue-like projection from the anterior-inferior portion of the left upper lobe. Posterior border The posterior border of the lungs is thick, and it separates the costal surface from the medial The lingula of the left lung is an anatomical subdivision of the left upper lobe that consists of two segments: the superior lingular segment (S4) and the inferior lingular segment (S5). Understand its function, clinical significance, and surgical relevance. This small projection extends downward and forward, resembling a tongue-like structure. The surface anatomy of the human lung divided into bronchopulmonary segments is shown here, viewed from the front. Dive deep now! The anterior border of the left lung presents with a deep notch called the cardiac notch. The left lung is divided into left upper (LUL teal), which includes the lingula (dark blue), and left lower lobe (LLL= green). s5i, kth5hm0, 6u8, 7vytv3, 88wih, idb, mjq, if5v2, 51v, 6af2,