1 — Arch of cricoid cartilage; 2 — Thyroid articular surface; 3 — Lamina of cricoid cartilage; 4 — Cricoid cartilage; 5 — Vocal process; 6 — Muscular process; 7 — Oblong fovea; 8 — Triangular fovea; 9 — Arytenoid cartilage; 10 — Corniculate cartilage; 11 — Colliculus; 12 — Apex of arytenoid cartilage; 13 — Arcuate crest; 14 — Articular surface; 15 — Base ofarytenoid cartilage; 16 — Arytenoid articular surface;
17 — Posterior surface; 18 — Anterolateral surface