1 — Right lung, inferior lobe; lower lobe; 2 — Costal surface; 3 — Oblique fissure; 4 — Right lung, superior lobe; upper lobe; 5 — Apex of lung; 6 — Anterior border; 7 — Horizontal fissure of right lung; 8 — Middle lobe of right lung; Costal surface; 9 — Inferior border; 10 — Lingula of
left lung; 11 — Cardiac notch of left lung