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Anatomy The most inferior part of the laryngeal cartilages and completely encircles the trachea. It is shaped like a signet ring with a broad lamina of cricoid cartilage posteriorly and a much slimmer arch of cartilage anteriorly completing the circle. The lamina has two depressions separated by a vertical ridge. There are two articular facets
- Published in Pocket Anatomy Pins, Teaching Anatomy